Question #1

In a study of 778 randomly selected medical malpractice? lawsuits, it was found that

489 of them were dropped or dismissed. Use a 0.01 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed.

Which of the following is the hypothesis test to be? conducted?

A. H₀:p=0.5

H₁:p

B. H₀:p>0.5

H₁:p=0.5

C. H₀:p=0.5

H₁:p>0.5

D. H₀:p

H₁:p=0.5

E. H₀:p?0.5

H₁:p=0.5

F. H₀:p=0.5

H₁:p?0.5

What is the test? statistic?

z= ___________

?(Round to two decimal places as? needed.)

What is the? P-value?

?P-value= __________

?(Round to three decimal places as? needed.)

What is the conclusion about the null? hypothesis?

A. Failtoreject the null hypothesis because the? P-value is greaterthan the significance? level, ?.

B. Reject the null hypothesis because the? P-value is lessthanorequalto the significance? level, ?.

C. Reject the null hypothesis because the? P-value is greaterthan the significance? level, ?.

D. Failtoreject the null hypothesis because the? P-value is lessthanorequalto the significance? level, ?.

What is the final? conclusion?

A. There isnot sufficient evidence to warrant rejection of the claim that most medical malpractice lawsuits are dropped or dismissed.

B. There is sufficient evidence to support the claim that most medical malpractice lawsuits are dropped or dismissed.

C. There is

sufficient evidence to warrant rejection of the claim that most medical malpractice lawsuits are dropped or dismissed.

D. There isnot

sufficient evidence to support the claim that most medical malpractice lawsuits are dropped or dismissed.

Question #3

Thirty different video games showing druguse were observed. The duration times of druguse ?(in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 89 ?sec, what does df? denote, and what is its? value?

What does df? denote?

A. The test statistic

B. The number of degrees of freedom

C. The sample size

D. The sample standard deviation

The value of df is __________.

?(Type an integer or a decimal. Do not? round.)

Question #4

In a study of the accuracy of fast food? drive-through orders, one restaurant had 38 orders that were not accurate among 333 orders observed. Use a 0.10 significance level to test the claim that the rate of inaccurate orders is equal to? 10%. Does the accuracy rate appear to be? acceptable?

Identify the null and alternative hypotheses for this test. Choose the correct answer below.

A. H₀?: p?0.1

H₁?: p=0.1

B. H₀?:p=0.1

H₁?: p?0.1

C. H₀?: p=0.1

H₁?: p

D. H₀?: p=0.1

H₁?: p>0.1

Identify the test statistic for this hypothesis test.

The test statistic for this hypothesis test is _________.

?(Round to two decimal places as? needed.)

Identify the? P-value for this hypothesis test.

The? P-value for this hypothesis test is ________.

(Round to three decimal places as? needed.)

Identify the conclusion for this hypothesis test.

A. Reject H₀. There is sufficient evidence to warrant rejection of the claim that the rate of inaccurate orders is equal to? 10%.

B. Failtoreject H₀. There isnot sufficient evidence to warrant rejection of the claim that the rate of inaccurate orders is equal to? 10%.

C. Failtoreject H₀. There is sufficient evidence to warrant rejection of the claim that the rate of inaccurate orders is equal to? 10%.

D. Reject H₀. There isnot sufficient evidence to warrant rejection of the claim that the rate of inaccurate orders is equal to? 10%.

Does the accuracy rate appear to be? acceptable?

A. Since there is sufficient evidence to reject the claim that the rate of inaccurate orders is equal to? 10%, the inaccuracy rate is? unacceptable, so the restaurant should work to lower that rate.

B. Since there is sufficient evidence to reject the claim that the rate of inaccurate orders is equal to? 10%, the inaccuracy rate is acceptable.

C. Since there isnot sufficient evidence to reject the claim that the rate of inaccurate orders is equal to? 10%, the restaurant should work to increase that rate.

D. Since there isnot sufficient evidence to reject the claim that the rate of inaccurate orders is equal to? 10%, it is plausible that the inaccuracy rate is ?10%. Thisratewouldbetoohigh?,

Question #6

The test statistic of z=2.41 is obtained when testing the claim that p>0.4.

a. Identify the hypothesis test as being? two-tailed, left-tailed, or? right-tailed.

b. Find the? P-value.

c. Using a significance level of ?=0.10?, should we reject H₀ or should we fail to reject H₀??

View page 1 of the standard normal distribution table.

NEGATIVE z Scores Standard Normal (2) Distribution: Cumulative Area from the LEFT 12 3:50 and 0101 -4.2 GODT -41POSITIVE z Scores Standard Normal (F) Distribution: Cumulative Area from the LEFT 5191 4584 ATM TMT 8301 1009 mis 271 10111101110141 11111191118 1.1 OF