Mathematics High School

Let x be normal distribution with mean 70 and standard deviation 2. given the following probability, p (x < a) = 0.9147, find the value a.

Answers

Answer 1

The value of a is 72.74.

What is Probability ?

Probability is the study of likeliness of an event to happen.

It is given that

The mean [tex]\rm \mu[/tex] of the distribution is 70

Standard deviation [tex]\rm \sigma[/tex] is 2

p( x<a) = 0.9147

a = ?

From Z table

For p ( p < 0.9147) , z = 1.37

[tex]\rm Z = \dfrac { X - \mu}{ \sigma}[/tex]

[tex]\rm \rm 1.37 = \dfrac { a - 70}{ 2}[/tex]

a = 70+ 2*1.37

a = 72.74

Therefore the value of a is 72.74.

To know more about Probability

https://brainly.com/question/11234923

#SPJ1

Related Questions

Which number line represents the solution set for the inequality 3(8 – 4x) < 6(x – 5)?

A number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the left.
A number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the right.
A number line from negative 5 to 5 in increments of 1. An open circle is at negative 3 and a bold line starts at negative 3 and is pointing to the left.
A number line from negative 5 to 5 in increments of 1. An open circle is at negative 3 and a bold line starts at negative 3 and is pointing to the right.

Answers

A number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the right. So the correct answer is option B.

What is inequality?

inequality the relationship between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”.

We can start by dividing the inequality by 3 to get ...

8 -4x < 2(x -5)

And we can divide by 2 to simplify further to ...

4 -2x < x -5

Now, we can add 2x+5, which gives ...

9 < 3x

and then divide by 3 again:

3 < x

Therefore number line from negative 5 to 5 in increments of 1. An open circle is at 3 and a bold line starts at 3 and is pointing to the right. So the correct answer is option B.

To know more about inequality follow

https://brainly.com/question/24372553

#SPJ1

Help with math work

Answers

Answers for different section are given below;

What is Function?

The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Here, given function;

f(x) = -x² - 4x + 6

1. If we take -1 common from the given function, we get

f(x) = -1 (x² + 4x - 6)

f(x) = -1 (x² + 4x) + 6

Thus, first block contains -1 and second block contains 4.

2. Then we add half of the coefficient of x², (b/2)², inside the bracket and subtract it outside a times, a(b/2)².

f(x) = -1 ( x² + 2. 2x + 2²) +2² + 6

f(x) = -1 ( x² + 4x + 2²) +4 + 6

Thus, first block contains -1, second block contains 4, third block contains 4, and fourth block contains 4.

3. Then we factorize the bracket and simplify outside the bracket;

f(x) = -1 (x + 2)² + 10

Thus, first block contains -1, second block contains 2 and third block contains 10.

Learn more about Function from:

https://brainly.com/question/12431044

#SPJ1

Select the correct answer.
Consider the given functions.

A table with values of x and f of x is given along with a non-linear equation g of x equals 2 power x minus 5 and a graph solving the equation

Select the true statement regarding the end behavior of the functions.

Answers

Using limits, it is found that the true statement regarding the end behavior of the function is given by:

B. As the value of x increases, f is the only function to approach 0.

How to find the end behavior of a function?

The end behavior of a function is given by the limit of the function as x goes to infinity.

In this problem, we have that:

[tex]\lim_{x \rightarrow \infty} f(x) = 0[/tex], as we can see from the table, when x increases, y decreases. [tex]\lim_{x \rightarrow \infty} g(x) = 2^{\infty} = \infty[/tex].[tex]\lim_{x \rightarrow \infty} h(x) = \infty[/tex], from the graph.

Hence statement B is correct.

More can be learned about limits at https://brainly.com/question/22026723

#SPJ1

8y and y are like terms

true
or
false

Answers

Answer:

True

Step-by-step explanation:

Hope this helps :)

Answer: True
have a great day

A graph is shown below
what is the equation of the line in slope intercept form HELP ASAP

Answers

Answer:

y = -2x + 16

the y intercept is the y value at x = 0. On the graph there is a dot at 16 on x= 0, so the y intercept would be 16.

the only answer choice adding 16 sis y = -2x + 16

What is the length of the hypotenuse? If necessary, round to the nearest tenth.

Answers

Greeting to you! My name is Cecille and I’m here to answer that question

For more explanation, please see the attachment

Answer:

75 mm

Step-by-step explanation:

Pythagorean theorem:

To find the hypotenuse, use Pythagorean theorem

Hypotenuse² = base² + altitude²

c² = 21² + 72²

= 441 + 5184

= 5625

[tex]\sf c = \sqrt{5625}[/tex]

[tex]= \sqrt{75*75}\\\\\boxed{\bf c = 75 \ mm}[/tex]

Which inequality is shown on this graph?

Answers

The inequality which shows the graph is [tex]y\le\ 4x+2[/tex].

What is inequality?

A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

As, from the inequalities the graph is representing the fourth inequality.

The graph attached below show the graph corresponding to

[tex]y\le\ 4x+2[/tex] is shown.

Learn more about inequality here:

https://brainly.com/question/20383699

#SPJ1

6. Solve for x: please explain

Answers

Answer:

Step-by-step explanation:

the angles need to add up to 180

60 + 40 =100

180 - 100 =80

80 - 5 =75

75/15 =5

Round to the nearest tenth. B 63 142° 61 A C X x = [?]

Answers

The value of x in the triangle is 117.2 units

The missing image is attached with the answer.

What is an Equation?

An equation is formed when two expression is equated by an equal sign to a constant , variable or an expression.

Cosine rule of Triangles is used and is given by

c² = a² + b² - 2ab cos C

Where a, b, c are the sides and C is the angle opposite side c.

from the given data in the figure

c = 63

a = 61 and

angle B is 142 degree

x² = 63² + 61² - 2(63)(61) * cos(142)

On solving

x = 117.2

The value of x in the triangle is 117.2 units

To know more about Equation

https://brainly.com/question/10413253

#SPJ1

Match the terms to their correct definitions.

1. Adjusted balance
planning for the distribution of one's estate after death
2. ATM Automatic (or Automated) Teller Machine
the annual interest ÷ cost
3. Bond
a share in the ownership of a company
4. Certificates of deposit (CD's)
document that specifies how one desires his estate to be distributed upon his death
5. Checking account
a share of money earned as profits by a company and distributed to its stockholders
6. Club account
a sum on deposit usually for a given period of time at a fixed interest rate
7. Compound interest
accounts are set up to save for specific purchases
8. Debit card
can be used like a credit card, but money is deducted directly from bank account
9. Dividend
a trust established while the owner of the trust is still alive
10. Estate planning
interest figured only on the amount of money in the savings account
11. Interest
interest figured on the amount of money in the savings account plus the amount of interest already earned
12. Intestate
permits the customer to make transactions by using a special computer terminal
13. Investment
an estate, or other property or money, given to a person or institution to manage
14. Living trust
like loaning money to the company for interest
15. Mutual fund
account allows you to write an instruction to the bank, as a check, to make a payment from that account
16. Simple interest
without a will
17. Stocks
a commitment of money in order to gain a financial return
18. Trust
investment instrument in which you purchase a part of a collection of investments
19. Will
balance after adding the outstanding deposits and subtracts the outstanding checks to the balance on the statement
20. Yield
the fee a bank pays you to keep your money

Answers

Lets try to figuring out the definition of it.

1. Planning for the distribution of one's estate after death is Estate planning.

2. Trust: an estate, or other property or money, given to a person or institution to manage.

3. Compound interest: figured on the amount of money in the savings account plus the amount of interest already earned.

4. Dividend: a share of money earned as profits by a company and distributed to its stockholders.

5. Checking account: account allows you to write an instruction to the bank, as a check, to make a payment from that account.

6. Will a legal document that describes how your estate should be distributed upon.

8. Purchasing a bond is like loaning money to the company for interest.

9. Club accounts: accounts are set up to save for specific purchases.

11. Mutual fund: instrument in which you purchase a part of a collection of investments.

12. A debit card can be used like a credit card, but money is deducted directly from bank account.

13. Automatic Teller Machine: permits the customer to make transactions by using a special computer terminal.

14. Adjusted balance: balance after adding the outstanding deposits and subtracts the outstanding checks to the balance on the statement.

15. Certificate of deposit (CD) is a sum on deposit usually for a given period of time at a fixed interest rate.

18. A trust created while a person is still alive is called a Living Trust.

19. Intestate: without a will.

20. Interest is the fee a bank pays you to keep your money.

Learn more about compound interest on:

https://brainly.com/question/18456266

#SPJ10