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

Show answers

Answers

Answer from: babyduckies37

Solution :

a). The test is a left tailed test.

b). The sample proportion is :

$\hat p = \frac{x}{n}$

$\hat p = \frac{17}{258}$

= 0.065

Determining the Z statistics using the formula :

$Z=\frac{\hat p - p}{\sqrt{\frac{p(1-p)}{n}}}$

$Z=\frac{0.065 - 0.11}{\sqrt{\frac{0.11(1-0.11)}{258}}}$

= -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 $H_0: P = 0.11$

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:

Another question on Mathematics

Mathematics, 21.06.2019 18:20

Match each inequality to the number line that represents its solution

Answers: 3

Answer

Mathematics, 21.06.2019 21:30

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.

Answers: 3

Answer

Mathematics, 21.06.2019 21:40

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Answers: 1

Answer

Mathematics, 21.06.2019 22:00

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

Answers: 3

Answer

You know the right answer?

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

Questions