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). OA. Ho: H1 H₂ H₁: H₁
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). OA. 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
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Question

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).
OA. Ho: H₁ H₂
H₁: H₁
H₂
OC. Ho: H₁
H₁: H₁
C
a. Use a 0.05 significance level to test the claim that giving candy does result in greater tips.
What are the null and alternative hypotheses?
H₂
H₂
No candy
Two candies
B. Ho: M₁ = H₂
H₁: H₁ H₂
D. Ho: H₁
μ
H₁
H₂
H₂
H₁: M₁ <H₂
n
29
29
X
S
18.91 1.47
21.75 2.49
T
Expert Solution

Step 1
given data
independent samples,comed from normal population
assume unequal variances,
Step by step
Solved in 2 steps

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