Given that:
n1 =200
n2 = 200
x1 = 15
x2 = 21
p1 = x1/n1 = 15/200 = 0.075
p2 = x2/n2 = 21/200 = 0.105
pbar = x1+x2 / n1+n2 = 15+21 / 200+200 = 0.09
alpha = 0.10
Ho p1 = p2
Ha p1 != p2
signifiance level is alpha = 0.10
critical value two tailed test is Zc = 1.64
z = p1 - p2 / sqrt(p (1-p)(1-n1 + 1/n2) = 0.075 - 0.105 / sqrt (0.09 * (1-0.09)(1/200 + 1/200)
z = -1.048
abserved that |z| = 1.048 < zc = 1.64 concludes null hypothesis is not rejected
p value is p = 0.2945
p = 0.2945 > 0.10
null hypothesis is not rejected. there is not enough evidance to claim that the propagation p1 is different than p2 the 0.10significance level
23. (8 points) In a sample of 200 surgeons, 15% thought the government should control health...
Instruction for Hypothesis Testing (Problems 17-25, Except 24) For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of Test Value and P-value. O O O O Indicate your parameter Indicate the claim List the given information Then start your five steps. Pay attention to the method, such as Traditional or P- value Put the step numbers inside a box For step (1): Indicate Ho Indicate...
20. (8 points) A company claims that the variance of the sugar content of its yogurt is less than or equal to 25. A sample of 20 servings is selected, and the sugar content is measured. The variance of the sample is found to be 36. Ata = 0.10 test the claim. Use Traditional method. For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of...
22. (8 points) Test the claim that the variance of heights of tall buildings in Denver is equal to the variance of heights of tall buildings in Detroit at a = 0.10. The data are given in feet. Use P-value method. Denver Detroit 714 698 544 620 472 430 504 438 408 562 448 420 404 534 436 For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give...
19. (8 points) A telephone company wants to advertise that more than 30% of all its customers have more than two telephones. To support this ad, the company selects a sample of 200 customers and finds that 72 have more than two telephones. Does the evidence support the ad? Use a : 0.05. Use P-value method. For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values...
21. (8 points) Is there a difference in average miles traveled each of two taxi companies during a randomly selected week? The data are shown below. Use a = 0.05. Assume that the populations are normally distributed. Use P-value method. Moonview Cab Company Starlight Cab Company X = 837 X, = 753 0 = 30 ni = 35 02 = 40 n = 40 For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two...
Instruction for Hypothesis Testing (Problems 17-25, Except 24) For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of Test Value and P-value. O O O O Indicate your parameter Indicate the claim List the given information Then start your five steps. Pay attention to the method, such as Traditional or P- value Put the step numbers inside a box For step (1): Indicate Ho Indicate...
Instruction for Hypothesis Testing (Problems 17-25, Except 24) For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of Test Value and P-value. O O O O Indicate your parameter Indicate the claim List the given information Then start your five steps. Pay attention to the method, such as Traditional or P- value Put the step numbers inside a box For step (1): Indicate Ho Indicate...
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For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of Test Value and P-value. . . . o O o Indicate your parameter Indicate the claim List the given information Then start your five steps. Pay attention to the method, such as Traditional or P- value Put the step numbers inside a box For step (1): Indicate Ho Indicate Hi...
Instruction for Hypothesis Testing (Problems 17-25, Except 24) For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of Test Value and P-value. O O O O Indicate your parameter Indicate the claim List the given information Then start your five steps. Pay attention to the method, such as Traditional or P- value Put the step numbers inside a box For step (1): Indicate Ho Indicate...
Instruction for Hypothesis Testing (Problems 17-25, Except 24) For One Population: Show your work for finding Test value, Critical value(s), or P-value. For Two Populations: Use your calculator to give the values of Test Value and P-value. O O O O Indicate your parameter Indicate the claim List the given information Then start your five steps. Pay attention to the method, such as Traditional or P- value Put the step numbers inside a box For step (1): Indicate Ho Indicate...