Asked by Jaysha sereal on Jun 08, 2024
Verified
The average gas mileage of a 4-wheel drive truck is 18.2 miles per gallon. The average gas mileage for 7 randomly selected trucks are listed below. 
a. Assume the gas mileage distribution is normal. It is of interest to know if the sample data suggest the average gas mileage is different from 18.2 miles per gallon.
b. Compute the test statistic for the hypotheses in (a).
Test Statistic = ______________
c. Compute the approximate p-value associated with the test statistic in (b).
P-Value = ______________
d. Does the sample data support the null hypothesis at the
= 0.05 level?
______________
Gas Mileage
A measure of a vehicle's fuel efficiency, typically expressed in miles per gallon (mpg) or kilometers per liter (km/L).
Test Statistic
A value computed from sample data to decide whether to reject the null hypothesis in hypothesis testing.
- Acquire insight into and employ hypothesis testing strategies for the estimation of population means.
- Finalize calculations on test statistics and dissect the interpretations of p-values.
- Engineer and appreciate confidence intervals for estimations of population means.
Verified Answer
KM
, 0.2727; 0.80; Yes
Learning Objectives
- Acquire insight into and employ hypothesis testing strategies for the estimation of population means.
- Finalize calculations on test statistics and dissect the interpretations of p-values.
- Engineer and appreciate confidence intervals for estimations of population means.
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