Reference no: EM132847959
An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.5 minutes. A random sample of 33 dive durations has a mean of 12.4 minutes and a standard deviation of 2.2 minutes. At α=0.01 is there enough evidence to reject the? oceanographer's claim? Complete parts? (a) through? (d) below. Assume the population is normally distributed.
?(a) Identify the claim and state H0 and Ha.
(b) b) Use technology to find the? P-value. Find the standardized test? statistic, t.
t= (Round to two decimal places as? needed.)
(c)Decide whether to reject or fail to reject the null hypothesis.
The null hypothesis is rejected if the? P-value is less than α=0.01.
Use this information to determine whether or not to reject the null hypothesis.
?(d) Interpret the decision in the context of the original claim.
If the claim is the null hypothesis and H0 is? rejected, then there is enough evidence to reject the claim. If H0 is not? rejected, then there is not enough evidence to reject the claim.