All categories

3 years ago

Solve each equation for the indicated variable. Solve for pi.

Mathematics

1 answer:

frutty [35]3 years ago

4 0

9514 1404 393

Answer:

π = 2A/r²

Step-by-step explanation:

Multiply by the inverse of the coefficient of π.

A = π(r²/2)

π = 2A/r²

You might be interested in

Given the following figure. What is the value of x

Nookie1986 [14]

Why?

Because if you draw a line from A to D to make a triangle AED, then triangle all angle add up equal 180.

3 0

4 years ago

Read 2 more answers

Express 36 mins as a fraction of an hour

Oxana [17]

Answer:

36/60

Step-by-step explanation:

There are 60 minutes in an hour

7 0

3 years ago

Which of the following is NOT true for a hypothesis test for correlation? Choose the correct answer below. A. If |r|less than

pantera1 [17]

Answer:

Answer explained

Step-by-step explanation:

From the information, the true statements for a hypothesis test for correlation is,

If the P-value is less than or equal to the significance level, we should reject the null hypothesis and conclude that there is sufficient evidence to support the claim of a linear correlation.

If |r| less than or equals critical value, we should fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim of a linear correlation.

If the P-value is greater than the significance level, we should fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim of a linear correlation.

<u>Explanation</u>

According to the decision rule of P-value approach, observe that if the P-value is less than or equal to the significance level, then there is evidence to reject the null hypothesis and conclude that there is sufficient evidence to support the claim of a linear correlation.

Similarly, if the P-value is greater than the significance level, we should fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim of a linear correlation.

According to the critical value approach, observe that if the test statistic value is greater than the critical value, then there is evidence to reject the null hypothesis and conclude that there is sufficient evidence to support the claim of a linear correlation.

- If |r| greater than critical value, we should fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim of a linear correlation.

<u>Explanation </u>

Based on the decision rules of the hypothesis test, the false statement about the test for a correlation is, if |r| less than or equals critical value, we should fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim of a linear correlation.

3 0

3 years ago

A basketball player makes 70% of the free throws he shoots. Suppose that he tries 15 free throws.

Volgvan

Answer:

a.) .95

b.) The expected number of baskets is 10.50.

c.) 1.7748

Step-by-step explanation:

a.) This is a binomial distribution as there are two possibilities: makes a free throw or doesn't. This means that you can use the binomial function on a calculator to figure out the answer. Use the binomial CDF function on a calculator and the number of trials=15, probability of success=.7, lower bound=0, upper bound=7. Once you have evaluated the answer, .0500, it will need to be subtracted from1, as you want everything not included in this section. The answer to part a is thus 1-.0500=.95.

b.) The expected value is calculated by taking the total number of shots and multiplying it by the probability of making the shot: 15×.7=10.5 shots.

c.) The standard deviation of a binomial distribution can be calculated by the formula $\sqrt{(sample size)(probability)(1-probability)}$ . Plugging in the numbers you get $\sqrt{(15)(.7)(.3)}$ =1.7748.

8 0

3 years ago

She is very young. She can wear this pretty and colorful dress.

SOVA2 [1]

A is the correct answer

3 0

3 years ago

Read 2 more answers