The manufacturer claims that your new car gets 28 mpg on the highway. You suspect that the mpg is more for your car. The 46 trips on the highway that you took averaged 28.7 mpg and the standard deviation for these 46 trips was 4.3 mpg. What can be concluded at the a = 0.01 level of significance?

The manufacturer claims that your new car gets 28 mpg on the highway. You suspect that the mpg is more for your car. The 46 trips on the highway that you took averaged 28.7 mpg and the standard deviation for these 46 trips was 4.3 mpg. What can be concluded at the a = 0.01 level of significance?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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The first picture is the question and the second is the ones that I need help with. Thanks

The manufacturer claims that your new car gets 28
mpg on the highway. You suspect that the mpg is
more for your car. The 46 trips on the highway that
you took averaged 28.7 mpg and the standard
deviation for these 46 trips was 4.3 mpg. What can be
concluded at the a = 0.01 level of significance?

c. The test statistic (t
|(please
show your answer to 3 decimal places.)
d. The p-value =
(Please show your
answer to 4 decimal places.)

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