Answer:

And replacing we got:

And we can find the bias with this formula:

And replacing we got:

Step-by-step explanation:
For this problem we know that the random variable of interest follows this distribution:

And we have the following random sample given:
39.2, 45.7, 27.4, 25.9, 25.1, 46.3, 42.9, 49.0, 40.6, 47.0
And we can calculate the sample mean with the following formula:

And replacing we got:

And we can find the bias with this formula:

And replacing we got:

Answer:
344444444433333338694
Step-by-step explanation:
Answer:
(4.5, 4.7)
Step-by-step explanation:
Hi!
Lets call X to the consumption of milk per week among males over age 32. X has a normal distribution with mean μ and standard deviation σ.

When you know the population standard deviation σ of X , and the sample mean is
, the variable q has distribution N(0,1):

Then you have:

This defines a C - level confidence interval. For each C the value of k is well known. In this case C = 0.98, then k = 2.326
Then the confidence interval is:
