An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). a. Use a 0.01 significance level to test the claim that giving candy does result in greater tips. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: Hy > H₂ OC. Ho: H₁ H₂ H₁ H₁ H₂ No candy Two candies OB. Ho: H₁ H₂ H₁ H₁ H₂ OD. Hoi Hy= t2 H₁: Hy
An experiment was conducted to determine whether giving candy to dining parties resulted in greater tips. The mean tip percentages and standard deviations are given in the accompanying table along with the sample sizes. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). a. Use a 0.01 significance level to test the claim that giving candy does result in greater tips. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: Hy > H₂ OC. Ho: H₁ H₂ H₁ H₁ H₂ No candy Two candies OB. Ho: H₁ H₂ H₁ H₁ H₂ OD. Hoi Hy= t2 H₁: Hy
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
a. What are the null and alternative hypotheses?
b. The test statistic, t, is
c. The P-value is
d. State the conclusion for the test.
e. Construct the confidence interval suitable for testing the claim in part (a).
Transcribed Image Text:An experiment was conducted to determine whether giving candy to dining parties resulted in
greater tips. The mean tip percentages and standard deviations are given in the accompanying
table along with the sample sizes. Assume that the two samples are independent simple random
samples selected from normally distributed populations, and do not assume that the population
standard deviations are equal. Complete parts (a) and (b).
a. Use a 0.01 significance level to test the claim that giving candy does result in greater tips.
What are the null and alternative hypotheses?
OA. Ho: H₁ H₂
H₁: H₁ H₂
C. Ho: H₁ H₂
H₁: M₁ <H₂
μl
No candy
H₁
Two candies H₂
OB. Ho: 1¹₂
H₁: H₁ H₂
OD. Ho: H=H2
H₁ H₁ H₂
n
40
40
S
1.47
20.72 2.34
X
18.69
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Construct the confidence interval suitable for testing the claim in part (a).
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