Mathematics, 20.07.2021 04:10 kbuhvu

# A certain drug is used to treat asthma. In a clinical trial of theâ drug, 17 of 258 treated subjects experienced headachesâ (based on data from theâ manufacturer). The accompanying calculator display shows results from a test of the claim that less than 11â% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.01 significance level to complete partsâ (a) throughâ (e) below. â
1-PropZTest

prop<0.11

z=â2.264337000

p=0.0117766978

p=0.0658914729

n=258

a. Is the testâ two-tailed, left-tailed, orâ right-tailed?

b. What is the best statistics?

c. What is the P-value?

d. What is the nut hypothesis and what do you conclude who det hypothesis?

Identify the null hypothesis.

A. H0: pâ 0.11.

B. H0: p=0.11.

C. H0: p<0.11.

D. H0: p>0.11.

Decide whether to reject the null hypothesis.

A. Reject the null hypothesis because theâ P-value is greater than Î±.

B. Fail to reject the null hypothesis because theâ P-value is less than or equal to Î±.

C. Reject the null hypothesis because theâ P-value is less than or equal to Î±.

D. Fail to reject the null hypothesis because theâ P-value is greater than Î±

e. What is the finalâ conclusion?

A. There is not sufficient evidence to warrant rejection of the claim that less than 11â% of treated subjects experienced headaches.

B. There is not sufficient evidence to support the claim that less than 11â% of treated subjects experienced headaches.

C. There is sufficient evidence to support the claim that less than 11â% of treated subjects experienced headaches.

D. There is sufficient evidence to warrant rejection of the claim that less than 11â% of treated subjects experienced headaches.

Answers: 2

Answer from: babyduckies37

Solution :

a). The test is a left tailed test.

b). The sample proportion is :

= 0.065

Determining the Z statistics using the formula :

= -2.31

∴ Z statistics value is -2.31

c). Using the excel function, the P-value is :

P-value = Normsdist(-2.31)

= 0.0104441

d). The null hypothesis is

The level of significance is 0.01

We fail to reject the null hypothesis as the P value is less than or equal to the significant level.

Answer from: Quest

step-by-step explanation:

try remembering the steps

Answer from: Quest

the answer is 489

step-by-step explanation:

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A certain drug is used to treat asthma. In a clinical trial of theâ drug, 17 of 258 treated subjects...

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