Question

Question 7 of 9 (1 point) View problem in a pop-up 7.1 Section Exercise 11 For a random sample of 70 overweight men, the mean of the number of pounds that they were overweight was 30. The standard deviation of the population is 4.4 pounds. Round intermediate answers to at least three decimal places. Round your final answers to one decimal place. Part 1 out of 4 The best point estimate of the mean is pounds. CHECK NEXT

Answer 1

Answer:

Given that:

$\Rightarrow$ For a random sample of 70 overweight men, the mean of the number of pounds that they were overweight was 30. The standard deviation of the population is 4.4 pounds.

$n=70$

T= 30

0 = 4.4

The best point estimate of the mean is

$\mu=\bar{x}$

$\mu=30.0\ pounds$

$\Rightarrow$  $z_{\alpha/2}$  for the 99% confidence interval

For 99% confidence interval

$c=99\%=0.99$

$\alpha=1-c$

$\alpha=1-0.99$

$\alpha=0.01$

$z_{\alpha/2}=2.575$