Question
In: Statistics and Probability
A large national survey shows that the waiting times for fast food restaurants is approximately normally...
A large national survey shows that the waiting times for fast food restaurants is approximately normally distributed with a mean of μ = 3.4 minutes and a standard deviation of σ = 0.6 minutes.
A fast food outlet claims that their mean waiting time in line
is less than 3.4 minutes.
To test the claim, a random sample of 60 customers is selected, and
is found to have a
mean of 3.3 minutes
Use this sample data to test the fast food outlet's claim at a .05 significance level .
Solutions
Expert Solution
The test statistic is calculated using the
formula mentioned. The critical value is obtained from
STATKEY(image attached for reference). We compare the test
statistic with the critical value and make the required
conclusion.
orchestra answered 3 years agoRelated Solutions
A large national survey shows that the waiting times for fast food restaurants is approximately normally...
A large national survey shows that the waiting times for fast
food restaurants is approximately normally distributed with a mean
of μ = 3.4 minutes and a standard deviation of σ = 0.6 minutes. A
fast food outlet claims that their mean waiting time in line is
less than 3.4 minutes. To test the claim, a random sample of 60
customers ia selected, and is found to have a mean of 3.3 minutes
Use this sample data to test the...
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Sparagowski & Associates conducted a study of service times
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3....
a trade magazine routinely checks the drive through service times of fast food restaurants. a 95%...
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A fast-food chain is examining the time customers spend waiting in line waiting to place their...
A fast-food chain is examining the time customers spend waiting
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Observation
1
2
3
4
5
6
7
8
9
1
4.20
5.85
9.30
4.75
10.12
13.38
9.18
10.72
8.67
2
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11.55
10.82
12.27...
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