A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below the top 12% and above the bottom 63% C: Scores below the top 37% and above the bottom 16% D: Scores below the top 84% and above the bottom 8% F: Bottom 8% of scores Scores on the test are normally distributed with a mean of 80.1 and a standard deviation of 7.2. Find the minimum score required for an A grade. Round your answer to the nearest whole number, if necessary.

Answers

Answer 1

Answer: 88.56

Step-by-step explanation:

Given that:

Mean score (m) = 80.1

Standard deviation (s) = 7.2

Minimum score required to score A grade =?

A= Top 12% of scores

Zscore corresponding to top 12% = bottom 88%

Zscore = 1.175

Zscore = (x - mean) / s

1.175 = (x - 80.1) / 7.2

1.175 * 7.2 = x - 80.1

8.46 = x - 80.1

8.46 + 80.1 = x

x = 88.56


Related Questions

Which two numbers both round to 1,500 when rounded to the nearest hundred?

Answers

Answer:

C

Step-by-step explanation:

Just take it lol

The two numbers where  both round to 1,500 when rounded to the nearest hundred is option c. 1457 and 1547.

What is Rounded number?

The rounded number should be that where the number should be rounded to the nearest tenth, hundred or thousand

Since the number is 1500

So for hundred the number should be likely 1457 and 1547.

hence, the option c is correct.

learn more about number here: https://brainly.com/question/21474983

find the measure of an interior angle of a regular polygon that has 10 sides ​

Answers

Answer:   The sum of the measures of the interior angles of a decagon (10 sided polygon) is 1,440. We found this by using the formula (n-2)(180). Thus, to find the measure of each interior angle we simply divide the sum by the number of total sides in the polygon. 1,440/10 = 144.

Step-by-step explanation: Hopefully this helps!

write this as a decimal​

Answers

Answer:

5.32

Step-by-step explanation:

Explain how to find the greatest number of identical arrangements that can be made with 54 roses and 42 tulips with no flowers left over then u got to show ur work​

Answers

Answer:

The greatest number of identical arrangements is 6 units of 9 roses and 7 tulips each.

Step-by-step explanation:

Tulips represent the limiting quantity. In this case, the easiest and most effective approach is determining the ratio of roses to tulips to get how many roses must be left along with a minimum quantity of tulips in a unit. That is:

[tex]x = \frac{54\,roses}{42\,tulips}[/tex]

[tex]x = \frac{27\,roses}{21\,tulips}[/tex]

[tex]x = \frac{9\,roses}{7\,tulips}[/tex]

The greatest number of identical arrangements is 6 units of 9 roses and 7 tulips each.

Answer:

Step-by-step explanation:

Mr. Morales purchased 218 acres of land for his farm. If the total price of the land was $163,282, how much did each acre cost?

Answers

Answer:

$749 each

Step-by-step explanation:

550 es 10 veces mayor que 500​

Answers

Answer:

Eso es incorrecto 550 es mayor por solamente 50 numeros

Step-by-step explanation:

SOMEONE PLEASE HELP ME !

Which is the slope of the line y=-32 + 2?

Answers

Answer:

the slope is 3

Step-by-step explanation:

Consider a value to be significantly low if its z score less than or equal to -2 or consider a value to be significantly high if its z score is greater than or equal to 2.

A data set lists weights​ (grams) of a type of coin. Those weights have a mean of 5.37215 g and a standard deviation of .05421 g. Identify the weights that are significantly low or significantly high.


What weights are significantly​ low? ​(Round to five decimal places as needed. Use ascending​ order.)

What weights are significantly​ high?

​(Round to five decimal places as needed. Use ascending​ order.)

Answers

Answer:

z₁ = 5,361308     this value, and values below this value, should be considered significantly low

z₂ = 5,48057   this value, and values above this value, should be considered significantly high

Step-by-step explanation:

z (score) = z₁ - μ₀ / σ

where μ₀  is mean   and σ the standard deviation.

if z (score) is equal to -2  ( or less) then

-2  = (z₁ - 5,37215)/0,05421

( -2 )*0,05421 = z₁ - 5,37215

- 0,10842 = z₁ - 5,37215

z₁ = 5,37215 - 0,010842

z₁ = 5,361308    

And if z = 2

2* 0,05421 = z₂ -  5,37215

0,10842 = z₂ - 5,37215

z₂ = 5,37215 + 0,10842

z₂ = 5,48057  

3 1/3 -2 2/5
Subtract

Answers

Answer:

[tex] 3\frac{1}{3} - 2 \frac{2}{5} \\ \frac{10}{3} - \frac{12}{5} \\ \frac{50 - 36}{15} \\ \frac{14}{15} [/tex]

If you drive for 6 hours at a rate of 55 miles per hour, then how far would you have traveled?
0330 miles
O 300 miles
0 660 miles
0 165 miles

Answers

Answer:

in one hour it's 55

in two hours it's 2*55

.

.

.

in six hours it's 6*55 = 330 miles


Help please !!! ASAP

Answers

Answer:

Plz rate five star and thanks me k your answer is D

Step-by-step explanation:

Please help me out. A square has an area of 90 square inches. Which two consecutive integers does a side length of the square fall between?


The side length of a square with an area of 90 square inches falls between the integers
A and
B .

Answers

Answer:

9 and 10

Step-by-step explanation:

Area of a square = s², where s = side length

Given that the square has an area of 90 in², the side length (s) of the square = √90.

Thus, 90 is not a perfect square and it's square root won't give us an integer.

Thus, √90 lies between two perfect squares namely, 81 and 100.

Therefore, the side length of the square would be:

√81 < √90 < √100

9 < √90 < 10.

The side length of the square lies between 9 and 10.

Answer:

9 and 10

Step-by-step explanation:

The faculty senate at a large university wanted to know what proportion of the students thought foreign language classes should be required for everyone. The statistics department offered to cooperate in conducting a survey, and a simple random sample of 500 students was selected from all the students enrolled in statistics classes. A survey form was sent by email to these 500 students. True or false

Answers

Answer:

True

Step-by-step explanation:

This is because, since the number of students who would engage in the survey is very much (around 500 students), the best option would be to send the survey form to them in their various email. This makes things easier for them to be able to respond to it.

Please Help?!?!

Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal?


p ≥ ____

Answers

Answer:

40

Step-by-step explanation:

200 divided by 5 = 40

write an equivalent fraction of 4/5 with the denominater 25​

Answers

Answer:

20/25

Step-by-step explanation:

to get to a dinominator of 25, we have to multiply 5 by 5. so then we do 4 x 5 so now it is 20/25

The correct answer would be 20/25

Please help. I will mark brainliest.​

Answers

Thanks for doing nothing

Answer:

andrew gets 15 dollars a hour

and andr

Which ordered pairs make the inequality true?

x+3y<9

Select each correct answer.

(5,1)

(1,3)

(−2,3)

(−1,4)

Answers

Answer:

The ordered pairs (-2,3) and (5,1) make the inequality true.

Step-by-step explanation:


Choose another name for plane s look at the picture for the full answer thank you for helping!

Answers

Answer:

c: plane ptm

Step-by-step explanation:

i’ll mark brainlest! i need help on other questions too! thankkk you

Answers

Answer:

-3/2

Step-by-step explanation:

Parallel lines have equal slopes.

Adam’s weight to the nearest kilogram is 65 kg what is the greatest possible value of his weight

Answers

Answer:

65kg=143.30047 pounds and 1kg=2.20462262 pounds

PLEASE HELP!!


Sorry for all the tabes I'm working on a presentation at the same time.

Answers

Answer:

0.5

Step-by-step explanation:

use rise over run, from (-6,0) to (0,3) it rises 3 and runs 6. 3/6 = 1/2.

Answer:

the slope is two

Step-by-step explanation:

rise over run

Jamie is walking her neighbors’ dog while they are away. She is keeping track of the total number of blocks she walks over time.

A 2-column table with 3 rows. Column 1 is labeled Minutes with entries 6, 14, 20. Column 2 is labeled Blocks with entries 3, 7, 10.

Does the table represent a proportional relationship?
A Yes, because both columns are written in ascending order.
B Yes, because the values in the second column are less than the values in the first column.
C Yes, because the ratios are equivalent between each pair of values.
D No, because the values in the table do not increase by the same amount in each row.

Answers

Answer:

C. Yes, because the ratios are equivalent between each pair of values.

Step-by-step explanation:

A relationship between two quantities is proportional if the ratio of the two quantities are the same for all the given possible pairs of values.

In the table given, the ratio of block to mins in the first given pair of values is 3/6 = 3/6 = ½.

In the second given pair, it is 7 to 14 = 7/14 = ½. The same ratio is gotten for the others as well.

Therefore, the table represents a proportional relationship.

The answer is: "C. Yes, because the ratios are equivalent between each pair of values."

Answer:

c

Step-by-step explanation:

janesa has 24 coins in her pocket worth exactly $1.00. she tells her younger brother jackson that he can have the coins if he correctly guesses how many of each coin she has. she gives him the hint that there are only nickels and pennies. complete the equation that represents the total value of the nickels and p pennies 5( blank ) + p = 100

Answers

Answer:

Number of Nickels = 19

Number of pennies = 5

Step-by-step explanation:

The type of coins that Janessa has = nickels and pennies.

Janessa has a total number of 24 coins

The sum of the nickels and pennies = $1.00

Let us represent the number of nickels as x

The number of pennies as y

Hence, our system of equations is :

x + y = 24..... Equation 1

x = 24 - y

A nickel is worth 5 cents.

1 nickel = $0.05

A penny is worth 1 cent.

1 penny = $0.01

Therefore,

$0.05× x + $0.01 × y= $1.00

0.05x + 0.01y = 1.00........Equation 2

Substitute 24 - y for x in Equation 1

0.05(24 - y) + 0.01y = 1

1.2 - 0.05y + 0.01y = 1

1.2 - 1 = 0.05y - 0.01y

0.2 = 0.04y

y = 0.2/0.04

y = 5

We have 5 pennies

x = 24 - y

x = 24 - 5

x = 19

We have 19 nickels

The FIFO method of computing equivalent units excludes the beginning inventory costs in computing the cost per equivalent unit for the current period.

Answers

Answer:

Yes

Step-by-step explanation:

The FIFO  method of process costing assumes that the opening work in process is the first group of units to be processed and completed during the current period. The opening work in progress is charged separately to completed production and the cost per unit is based only on the current period costs and the production for the current period. The closing work in process is assumed to come from the new units started during the period.

Ralph chase plans to sell a piece of property for 170000 he wants the money to be paid off in two ways -a short-term note at 11% interest and a long term note at 9% interest. Find the amount of each note if the total annual interest paid is 171700

Answers

Answer:

There is something wrong with the question because you cannot earn more interest during a year than the principal if you earn only 9% or 11%. You would have to earn more than 100%, so I will do this calculation based on $17,170 (not $171,700) earned in interest per year.

let S = amount received from short term note, and L = amount received from long term note

0.11S + 0.09L = 17170

S + L = 170000

S = 170000 - L

0.11 (170000 - L) + 0.09L = 17170

18700 - 0.11L + 0.09L = 17170

1530 - 0.02L = 0

1530 = 0.02L

L = 1530 / 0.02 = $76,500

S = 170000 - 76500 = $93,500

A television with a 5:3 screen shows an image with a ratio of 5:4 which creates a letter boxed image. What percent of the screen’s area is occupied by the image?


a)

133%

b)

75%

c)

20%

d)

33%

e)

25%

Answers

Answer:

C

Step-by-step explanation:

Gary studied for a total of 6 3/4 hours during the three days before her math test. If he study for the same amount of time each day how much time did he spent studying each day?

Answers

Answer:

Step-by-step explanation:

answer as a Fraction:9/4

answer as a Decimal: 2.25

answer as a mixed number: 2 1/4

w(t) = 3t – 1; t = 5

Answers

I’m not sure if your asking for the solution, but Hope this helps!

An advertisement in a magazine has a width of 80 mm and a height of 125 mm. Find
the units for the perimeter of the rectangle defined by this advertisement.

Answers

Answer:

perimeter calculator online

Step-by-step explanation:

Which expression is equivalent to 27 + 15?
1) 3(24 + 12)
2) 319 + 5)
3) 9(3 + 15)
4) 9(18+ 6)

Answers

1) 72 + 36
2) 27 + 15
3) 27 + 135
4) 162 + 54
Therefore 2 is equal to 27 + 15 because
27 + 15 = 27 + 15
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