A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.5 seconds. A random sample of 23 sedans has a mean minimum time to travel a quarter mile of 15.5 seconds and a standard deviation of 2.11 seconds. At α=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 H0 and Ha. The claim is the _____ hypothesis (b) use technology to find the P value. Find the standardized test statistic, t. t=______ Obtain the P value P=_______ (c)Decide whether to reject or fail to reject the null hypothesis:
A consumer group claims that the mean minimum time it takes for a sedan to travel a quarter mile is greater than 14.5 seconds. A random sample of 23 sedans has a mean minimum time to travel a quarter mile of 15.5 seconds and a standard deviation of 2.11 seconds. At α=0.01 is there enough evidence to support the consumer group's claim? Complete parts (a) through (d) below. Assume the population is
(a) Identify the claim and state H0 and Ha.
The claim is the _____ hypothesis
(b) use technology to find the P value. Find the standardized test statistic, t.
t=______
Obtain the P value
P=_______
(c)Decide whether to reject or fail to reject the null hypothesis:
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