A simple random sample of size n=40 is drawn from a population. The sample mean is found to be x=121.2 and the sample standard deviation is found to be s=12.2. Construct a 99% confidence interval for the population mean. The lower bound is nothing . (Round to two decimal places as needed.)

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!

333.74 ! should be your answer for this question