Answer:
5.3...
..............
The data set below shows the number of points scored by a basketball team for each of nine games. If the mean of the data is 83 and the standard deviation is 6.5, identify all the scores that are within one standard deviation of the mean. {71, 77, 79, 80, 83, 87, 88, 90, 92}
Answer:
The scores within one standard deviation of the mean are: 77, 79, 80, 83, 87, 88
Step-by-step explanation:
The mean of the data is 83 and the standard deviation is 6.5, find scores within 1 standard deviation of the mean:
Between
83 - 6.5 = 76.5
83 + 6.5 = 89.5
So:
The scores within one standard deviation of the mean are: 77, 79, 80, 83, 87, 88
In a class of pupils, 11 play the flute and piano.
10 play the flute only.
5 play the piano only.
3 play neither instrument.
How many pupils are in the class?
Answer:
The answer is 29
Step-by-step explanation:
11+10+5+3=29
The value of x in the expression 2x + 3 = 13 is
Answer:
B
Step-by-step explanation:
get x by itself
2x+3=13 - subtract 3 from both sides
2x=10 - divide each side by 2
x=5
I added a picture of the problem
Answer:
x≥88
88
88≤x≤100
Step-by-step explanation:
83x3=249
249-73-88=88
x≥88
88
88≤x≤100
-5.2k+2.9 =-12k+30.1
Please show work !
answer: 3.8857
explanation:
Simplifying
-5k + 2.9 = -12k + 30.1
Reorder the terms:
2.9 + -5k = -12k + 30.1
Reorder the terms:
2.9 + -5k = 30.1 + -12k
Solving
2.9 + -5k = 30.1 + -12k
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '12k' to each side of the equation.
2.9 + -5k + 12k = 30.1 + -12k + 12k
Combine like terms: -5k + 12k = 7k
2.9 + 7k = 30.1 + -12k + 12k
Combine like terms: -12k + 12k = 0
2.9 + 7k = 30.1 + 0
2.9 + 7k = 30.1
Add '-2.9' to each side of the equation.
2.9 + -2.9 + 7k = 30.1 + -2.9
Combine like terms: 2.9 + -2.9 = 0.0
0.0 + 7k = 30.1 + -2.9
7k = 30.1 + -2.9
Combine like terms: 30.1 + -2.9 = 27.2
7k = 27.2
Divide each side by '7'.
k = 3.885714286
Simplifying
k = 3.885714286
hope this helped;))))
prove that:
[tex] |x \: y \: z \\ {x \: {y \\ {z \\ yz \: zx \: xy = (y - z) \: (z - x) \: (x - y) \: (xy + yz + zx)}^{2} }^{2} }^{2} | [/tex]
Answer:
???
Step-by-step explanation:
moris code?
Answer:
c, none of the above
Step-by-step explanation:
khan
A graduate student is performing a study on a new antidepressant. The drug is supposed to reduce depression, but the graduate student realizes that it may do nothing or even increase depression, so she decides to formulate nondirectional hypotheses and conduct a two-tailed test. First, she uses mu_general population to denote the average score on the depression inventory for the population of all depressed people, and mu_antidepressant to denote the average score on the depression inventory for the population of depressed people who take the new antidepressant. She knows that the average score for all depressed people is mu_general population = 25, with a standard deviation of sigma = 6. The graduate student identifies the null and alternative hypotheses as: H_0: mu_antidepressant = mu_general population H_1: mu_antidepressant notequalto mu_general population The sample of 36 depressed people who tried out the new antidepressant scored an average of 23.3. Since the graduate student knows the standard deviation of the scores on the depression inventory for the population of people who are depressed, she intends to use a hypothesis test that uses the z-score of the sample mean as the test statistic (also known as the z test). First, she wants to make sure all the required assumptions are satisfied. Which of the following conditions is not a required assumption for the z test?
The scores on the depression inventory follow a normal distribution or the sample size is large (at least 30).
The standard deviation of the scores on the depression inventory is the same for those who take the antidepressant and those who don't.
Each observation is independent of every other observation.
The sample size must be very large.
Members of the sample are selected randomly.
Use the Distributions tool to find the critical region for alpha = .05. The critical z-scores (the values for z-scores that separate the tails from the main body of the distribution, forming the critical regions) are_______
Calculate the z statistic, and use the Distributions tool to evaluate the null hypothesis. The z statistic is______ The z statistic_______ lie in the critical region for a two-tailed hypothesis test. Therefore, the null hypothesis is______ .
Answer:
Step-by-step explanation:
From the given information:
The null and the alternative hypothesis is:
[tex]H_o: \mu_{antidepressant}= \mu_o[/tex]
[tex]H_1: \mu_{antidepressant}\ne \mu_o[/tex]
The population mean = 25
The sample mean = 23.3
sample size n = 36
standard deviation = 6
From the following conditions given; the condition that is not required is:
[tex]\text{The sample size must be very large}[/tex]
Since the sample size is 30, we do not need the condition and it's enough for the Z test provided that the population is not normally distributed. If the population is distributed normally, then any sample size is valid:
Then, the test statistics can be computed as follows:
[tex]Z = \dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}} }[/tex]
[tex]Z = \dfrac{23.3 - 25}{\dfrac{6}{\sqrt{36}} }[/tex]
[tex]Z = \dfrac{23.3 - 25}{\dfrac{6}{6} }[/tex]
[tex]Z = -1.7[/tex]
At the level of significance 0.05
Since the test is two-tailed, the critical value [tex]Z_{\alpha/2} = Z_{0.025} = 1.96[/tex]
Provided that the Z value is not less than the critical value;
Then, we fail to reject the null hypothesis.
We conclude that there is no enough evidence that the drug reduces depression.
A furniture store routinely calls some customers to inquire about their buying experience in the showroom, the delivery and setup, and their overall satisfaction with
purchase. Today the calls will go to 2 homes randomly selected from last week's 5 customers. How many different groups of customers could the store call?
Answer:
10 different groups of customers could the store call
Step-by-step explanation:
Given the data in the question;
calling two (2) homes out of last week's five (5) customers;
so, there are 5 customers from last week and todays call needs to go to 2 customers randomly;
hence, Total group will be;
[tex]\left[\begin{array}{ccc}5\\2\\\end{array}\right][/tex] = 5! / ( 2! × ( 5 - 2 )!
= 5! / (2! × 3! )
= 10
Therefore, 10 different groups of customers could the store call
completely the equation 2(x+5)=11
-4 = r divided by 20 − 5
Solve for R
Answer:
20
Step-by-step explanation:
Simplify both sides of the equation.
−4= r 20 −5 −4= 1 /20 r+−5 −4= 1 /20 r−5
Flip the equation.
1 /20 r−5=−4
Add 5 to both sides.
1 /20 r−5+5=−4+5
1 /20 r=1
Multiply both sides by 20.
20*( 1 /20 r)=(20)*(1)
r=20
help please please guys
Answer:
Sorry... I don't understant...
Aquarium World
A package shipment company recorded the number of
packages received at each of two businesses,
Aquarium World and Rare Vinyl. The line plots show
the number of packages received at each business
every day over 2 weeks.
x x
X X X X X
X X X X X X X
5
10
15
What statements about the two plots' distributions are
true?
Rare Vinyl
Choose each correct answer.
The range of packages shipped to
Aquarium World is greater than the range in
packages shipped to Rare Vinyl.
The range of packages shipped to Rare
Vinyl is greater than the range of packages
shipped to Aquarium world.
Only the distribution of the data for
packages shipped to Aquarium World is
approximately symmetrical.
The distribution of the data for packages
shipped to both business is approximately
symmetrical.
Answer:
•the range of packages shipped to rare vinyl is greater than the range of packages shipped to aquarium world.•
•The distribution of the data for packages shipped to both business is approximately symmetrical.•
Step-by-step explanation:
I took the test
Show work pls! :D
Given the following 30-60-90 triangle, find the value of x and y. Round to the nearest tenth.
5. One side of a triangle has length 12.
2. How long is the segment that joins the midpoints of the other two sides?
b. How long would the segment joining the midpoints be if the side of the
triangle had length 10? Length 18? Length 19?
What is the percents of the quantity 30% of 760
Answer:
the answer is 228
Step-by-step explanation:
30% × 760 =
(30 ÷ 100) × 760 =
(30 × 760) ÷ 100 =
22,800 ÷ 100 =
228
I hope this is what you were looking for
Answer:
228
Step-by-step explanation:
30% of 760 = [tex]\frac{30}{100}*760[/tex]
= 3 *76
= 228
Rita works 1234 hours in her first week at a new job. She works 1514 hours in the second week. How many more hours does Rita work the second week?
Answer:
280
Step-by-step explanation:
1514-1234 = 280
based on your understanding about matendo
activities
LEARNING ACTIVITY 1
horizontal, vertical or diagonal The first letter of your answer is given already.
hank for the four parts of a typical mathematical system using Word Hunt Puzzle. It will be
1. U
2. D.
3. P
4 T
U B
MNO
Y
R
F G
V
GFIED
T
V
D
D
NO
C
N
0
B
Ol
F
1
K
P
N
G
NNN
RSES
Y Y
P
ONO
WWV
V
D
T
L
B
F
w
A
N
T
5
E
EO
$
T
T
V
W
A
Z
X
0
1
5
c
G
D
LEARNING ACTIVITY 2
Determine if the following terms represent a POINT, a LINE or a PLANE
1. Tip of a ballpen
6. wall
2. Screen of a cellphone
7. Note card
3. Cable wire
8. mole
4. Laptop
9. Hair strand
5. Edge of a table
10 Edge of the desk
Answer:
what is the question? where is the diagram?
What are the two possible answers for the equation Ix/5I = 3?
Answer:
Either [tex]x = -15[/tex] or [tex]x = 15[/tex].
Step-by-step explanation:
[tex]|x| = \left\lbrace \begin{aligned} & x && \text{if $x \ge 0$} \\ & -x && \text{if $x < 0$}\end{aligned}\right.[/tex].
Hence, there are two possibilities to consider:
Either [tex](x / 5) \ge 0[/tex],Or [tex](x / 5) < 0[/tex].If [tex](x / 5) \ge 0[/tex], then [tex]|x / 5| = x / 5[/tex].
Substitute into the original equation: [tex]x/ 5= 3[/tex]. Solve for [tex]x[/tex]: [tex]x = 15[/tex].
Important: verify that the solution [tex]x = 15[/tex] meet the assumption [tex](x / 5) \ge 0[/tex]. Indeed, [tex](x / 5) = (15 / 5) = 3[/tex] and is indeed non-negative. Hence, the solution [tex]x = 15\![/tex] is valid.
On the other hand, if [tex](x / 5) < 0[/tex], then [tex]|x / 5| = - x / 5[/tex].
Substitute into the original equation: [tex](-x / 5) = 3[/tex]. Solve for [tex]x[/tex]: [tex]x = -15[/tex].
Similarly, verify that the solution [tex]x= - 15[/tex] satisfies the current assumption that [tex](x / 5) < 0[/tex]. Indeed, this assumption is met, and [tex]x = -15[/tex] is also a valid solution.
-3 - 8 (-5x - 1) distributive property
Answer:
5 +40x
Step-by-step explanation:
Distributive property:a*(b +c) =(a*b) + (a*c)
-3 - 8( -5x - 1) = -3 + (-5x)*(-8) + (-1) * (-8)
= -3 + 40x + 8
= -3 + 8 + 40x {combine like terms}
= 5 + 40x
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.
Answer:
Width 2in
height 3in
length 4in
Step-by-step explanation:
If he want the length to be four he has to take 2 sqares off at the end to be left with his height as 3 so vertical from top to bottom and width (the two sqaures at the end of the photo to the left) would be 2. :)
Width of box=2in
Height of box=3in
Length of box=6in
Volume=2(3)(6)=36in³Now
length of the box is 4in
Product of width and height=36/4=9in²
They must be of 3×3 in or 4.5×2 in
Mar 01, 2:2
Nolan is going to invest $96,000 and leave it in an account for 6 years. Assuming the
interest is compounded monthly, what interest rate, to the nearest hundredth of a
percent, would be required in order for Nolan to end
up
with $142,000?
Answer:
put it this way 10% Is 9600 and 1% is 960
Step-by-step explanation:
so if it stacks monthly you can find your answer
also if you lookup compound interest calculator it will help you will future problems
Answer: its 6.54
Step-by-step explanation: its right on delta math
Answer these its due today
Answer:
you didn't attached it
Step-by-step explanation:
send it again
Answer:no questions here thanks for the points have a nice day
Step-by-step explanation:ACHIEVEMENTS
Graph the function
f(x)=3/4x+2
Answer:
i added the graph below :) hope this helps hun <3
Step-by-step explanation:
need help will give brainliest
Answer:
ok so, gold has to be 0.26
bronze has to be 0.20
copper has to be 0.32
Step-by-step explanation:
Answer:
0.26 gold
0.20 bronze
0.32 copper
Step-by-step explanation:
take the frequency of each color and divide by the total number of tosses made to get the probability
Aramaic sequence how do you find the term
hi can you please help me with my work
Answer:
The penicl is about 6.5 inches long.
Step-by-step explanation:
15/3+30/3= how I can solve it ?
Which image below shows the result of an image that has been rotated 180 by the origin O?
Cookies are sold singly or in packages of 8 or 24. With this packaging, how many ways can you buy 48 cookies?
Answer:
12
Step-by-step explanation:
this was right got the question wrong when I first did it
In "12 ways" you can 48 cookies. A complete solution is provided below.
According to the question,
Packages having,
= 8 or 24
Firstly we choose,
8 cookies packages 6 or,24 cookies packages 2 or,One 24 cookies packages remaining three 8 cookies packages.hence,
→ The total ways you can buy 48 cookies will be:
= [tex]6+2+1+3[/tex]
= [tex]12 \ ways[/tex]
Learn more:
https://brainly.com/question/3897030
The Jackson family went to soups and wiches and bought four sand which sand three bowls of soup for $27. The frank family went to soups and wiches and bought one bowl of soup and five sandwiches for $25.50. Let w represent the cost of the sandwich CNN es and a represent the cost of a bowl of soup. Identify which system of equations represents the situation.
Answer:
4w + 3c = $27
5w + c = $25.50
Step-by-step explanation:
Let us assume the w represent the cost of the sandwich
And, the c represent the cost of the bowl in a soup
Now the equations are
4w + 3c = $27
5w + c = $25.50
These two should be the equations that represent the situation
