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 D. Ho: H₁ H₂ H₁: H1
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 D. Ho: H₁ H₂ H₁: H1
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
No or Yes because the confidence interval contains zero, only negative values, or only positive values.
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. H₂H₁ = H₂
H₁: H₁ H₂
C***
OC. Ho: H₁ H₂
H₁: H₁
H₂
No candy
Two candies
O B. Ho Hy H
H₁: Hy > H₂
O D. Ho: H₁ #1₂
H₁: H₁ <H₂
pl
P₁
H₂
n
37
37
X
S
18.85 1.47
20.94
2.34
Transcribed Image Text:The test statistic, t, is (Round to two decimal places as needed.)
The P-value is - (Round to three decimal places as needed.)
State the conclusion for the test.
OA. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that giving candy does result in greater tips.
OB. Reject the null hypothesis. There is sufficient evidence to support the claim that giving candy does result in greater tips.
OC. Fail to reject the null hypothesis. There is sufficient evidence to support the claim that giving candy does result in greater tips.
OD. Reject the null hypothesis. There is not sufficient evidence to support the claim that giving candy does result in greater tips.
b. Construct the confidence interval suitable for testing the claim in part (a).
4
(Round to two decimal places as needed.)
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