The manufacturer claims that your new car gets 33 mpg on the highway. You suspect that...

The manufacturer claims that your new car gets 33 mpg on the highway. You suspect that the mpg is more for your car. The 42 trips on the highway that you took averaged 35 mpg and the standard deviation for these 42 trips was 6 mpg. What can be concluded at the αα = 0.01 level of significance?

For this study, we should use Select an answer t-test for a population mean z-test for a population proportion
The null and alternative hypotheses would be:

H0:H0: ? μ p ? > = < ≠

H1:H1: ? p μ ? ≠ > < =

The test statistic ? t z = (please show your answer to 3 decimal places.)
The p-value = (Please show your answer to 4 decimal places.)
The p-value is ? > ≤ αα
Based on this, we should Select an answer fail to reject accept reject the null hypothesis.

Expert Solution

a) t-test for a population mean

orchestra answered 2 years ago

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