A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.8 seconds. A random sample of 20 sedans has a mean minimum time to travel a quarter mile of 15.3 seconds and a standard deviation of 2.09 seconds. At a= 0.01 is there enough evidence to support the consumer group's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. (a) Identify the claim and state Ho and H Ho: H,: (Type integers or decimals. Do not round.) The claim is the hypothesis. (b) Use technology to find the P-value. Find the standardized test statistic, t. (Round to two decimal places as needed.) Obtain the P-value. (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Ho because the P-value V greater than a. (d) Interpret the decision in the context of the original claim. seconds. V enough evidence at the % level of significance to V the claim that the mean minimum time it takes for a sedan to travel a quarter mile is There (Tvoe inteaers or decimals. Do not round.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.8 seconds. A random sample of 20 sedans has a mean minimum time to travel a quarter mile of 15.3 seconds and a standard
deviation of 2.09 seconds. At a = 0.01 is there enough evidence to support the consumer group's claim? Complete parts (a) through (d) below. Assume the population is normally distributed.
(a) Identify the claim and state Ho and Ha
Ho:
(Type integers or decimals. Do not round.)
The claim is the
V hypothesis.
(b) Use technology to find the P-value. Find the standardized test statistic, t.
(Round to two decimal places as needed.)
Obtain the P-value.
(Round to three decimal places as needed.)
(c) Decide whether to reject or fail to reject the null hypothesis
V Họ because the P-value
V greater than a.
(d) Interpret the decision in the context of the original claim.
seconds.
V enough evidence at the % level of significance to
V the claim that the mean minimum time it takes for a sedan to travel a quarter mile is
There
(TvDe inteaers or decimals. Do not round.)
Transcribed Image Text:A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.8 seconds. A random sample of 20 sedans has a mean minimum time to travel a quarter mile of 15.3 seconds and a standard deviation of 2.09 seconds. At a = 0.01 is there enough evidence to support the consumer group's claim? Complete parts (a) through (d) below. Assume the population is normally distributed. (a) Identify the claim and state Ho and Ha Ho: (Type integers or decimals. Do not round.) The claim is the V hypothesis. (b) Use technology to find the P-value. Find the standardized test statistic, t. (Round to two decimal places as needed.) Obtain the P-value. (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis V Họ because the P-value V greater than a. (d) Interpret the decision in the context of the original claim. seconds. V enough evidence at the % level of significance to V the claim that the mean minimum time it takes for a sedan to travel a quarter mile is There (TvDe inteaers or decimals. Do not round.)
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