To keep in shape l, Ann exercises at a track near her home. She requires 24 minutes to do 4 laps running and 4 laps walking.
1 answer:
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Hello!
I take that the "/" was meant to be a fraction. There fore, your answer would be
.
Enjoy.
~Isabella
I take that the "/" was meant to be a fraction. There fore, your answer would be
Enjoy.
~Isabella
Answer:
The value of an appropriate test statistic for the car dealer to use is -4.
Step-by-step explanation:
The null hypothesis is:
The alternate hypotesis is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
In this problem:
Then
The value of an appropriate test statistic for the car dealer to use is -4.