oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.3 minutes. A random sample of 32 dive durations has a mean of 12.3 minu da standard deviation of 2.2 minutes. At a= 0.05 is there enough evidence to reject the oceanographer's claim? Complete parts (a) through (d) below. Assume the pulation is normally distributed. )Identify the claim and state Ho and Ha 11.3 %3D # 11.3 Type integers or decimals. Do not round.) The claim is the null hypothesis. b) Use technology to find the P-value. Find the standardized test statistic, t. t= 2.57 (Round to two decimal places as needed.) Obtain the P-value. P= 0.015 (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. irootor thnn o

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An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.3 minutes. A random sample of 32 dive durations has a mean of 12.3 minutes
and a standard deviation of 2.2 minutes. At a = 0.05 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 Ho and Ha.
Ho:
11.3
%3D
Ha:
11.3
(Type integers or decimals. Do not round.)
The claim is the
null
hypothesis.
(b) Use technology to find the P-value. Find the standardized test statistic, t.
t= 2.57
(Round to two decimal places as needed.)
Obtain the P-value.
P= 0.015
(Round to three decimal places as needed.)
(c) Decide whether to reject or fail to reject the null hypothesis.
Fail to reject Ho because the P-value
is
greater than a.
Transcribed Image Text:An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.3 minutes. A random sample of 32 dive durations has a mean of 12.3 minutes and a standard deviation of 2.2 minutes. At a = 0.05 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 Ho and Ha. Ho: 11.3 %3D Ha: 11.3 (Type integers or decimals. Do not round.) The claim is the null hypothesis. (b) Use technology to find the P-value. Find the standardized test statistic, t. t= 2.57 (Round to two decimal places as needed.) Obtain the P-value. P= 0.015 (Round to three decimal places as needed.) (c) Decide whether to reject or fail to reject the null hypothesis. Fail to reject Ho because the P-value is greater than a.
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