amy is building a house. the basement floor is at -15 feet. the roof of the house is above the ground 25 feet. express the compa
2 answers:
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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.
You then would eliminate 6, by adding 6 to both sides
Then you want all of the X's on the same side, so you subtract 2x from both sides.
Then to isolate the X, you divide by 2
The answer is x=2