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Identify the claim and state h0 and ha

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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 14.7 seconds. A random sample of 20 sedans has a mean minimum time to travel a quarter mile of 15.5 seconds and a standard deviation of 2.08 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.

H0: μ less than or equals ≤ 14.7

Ha: μ greater than > 14.7

b) Use technology to find the? P-value. Find the standardized test? statistic, t.

t=_____

?(Round to two decimal places as? needed.)

Obtain the? P-value.

P=_____

?(Round to three decimal places as? needed.)

Reference no: EM132858275

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