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marfeliz5953
22.07.2021 •
Mathematics
Use the information in the diagram to determine the height of the tree. The diagram is not to scale. A. 264ft B. 72 ft C. 60ft D. 80 ft
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Ответ:
The confidence interval is given by (49.94, 59.26)
Step-by-step explanation:
Info given
s=9.2 represent the sample standard deviation
n=48 represent the sample size
Part a
The confidence interval for the mean is given by the following formula:
The degrees of freedom are given by:
The Confidence is 0.999 or 99.9%, and the significance is
and
, and the critical value would be ![t_{\alpha/2}=3.51](/tpl/images/0688/0374/14d53.png)
And replacing we got:
The confidence interval is given by (49.94, 59.26)