A student organization uses the proceeds from a soft drink vending machine to finance its activities. The price per can was $0.75 for a long time, and the mean daily revenue during that period was $135.00. The price was recently increased to $1.00 per can. A random sample of n = 29 days after the price increase yielded a sample mean daily revenue and sample standard deviation of $130.00 and $3.85, respectively. Does this information suggest that the mean daily revenue has decreased from its value before the price increase? Test the appropriate hypotheses using α = 0.05.
A student organization uses the proceeds from a soft drink vending machine to finance its activities. The price per can was $0.75 for a long time, and the mean daily revenue during that period was $135.00. The price was recently increased to $1.00 per can. A random sample of n = 29 days after the price increase yielded a sample mean daily revenue and sample standard deviation of $130.00 and $3.85, respectively. Does this information suggest that the mean daily revenue has decreased from its value before the price increase? Test the appropriate hypotheses using α = 0.05.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question

Transcribed Image Text:A student organization uses the proceeds from a soft drink vending machine to finance its activities. The price per can was $0.75 for a long time, and the
mean daily revenue during that period was $135.00. The price was recently increased to $1.00 per can. A random sample of n = 29 days after the price
increase yielded a sample mean daily revenue and sample standard deviation of $130.00 and $3.85, respectively. Does this information suggest that the
mean daily revenue has decreased from its value before the price increase? Test the appropriate hypotheses using α = 0.05.
Step 1
We are given that a student organization uses the proceeds from a soft drink vending machine to finance its activities. The price per can was $0.75 for a
long time, and the mean daily revenue during that period was $135.00.
The price was recently increased to $1.00 per can. A random sample of 29 days after the price increase yielded a sample mean daily revenue and
sample standard deviation of $130.00 and $3.85, respectively. We are asked to determine if this information suggests that the mean daily revenue has
decreased from its value before the price increase by testing appropriate hypotheses using a = 0.05.
Use the five-step process for hypothesis testing problems.
The first step is Hypotheses.
Determine the null and alternative hypotheses. The question is whether the mean daily revenue has decreased from its value before the price increase,
when the mean daily revenue was $135.00. This translates to an alternative hypothesis of μ<✔✔ 135. The null hypothesis is that there is no
difference between the mean revenue before and after the price increase, μ =
Therefore, we have the following.
но: м=
на: н
✔135
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