A researcher wanted to estimate the mean number of hours adults spend formally exercising each week. She gathered a random sample and created a 95% confidence interval of (0.45 hours, 7.94 hours). Which of the following is the correct interpretation of this confidence interval?

Select one:a.

There is a 0.95 probability that adults exercise formally between 0.45 hours and 7.94 hours per week.

b.

We are 95% confident that the population mean number of hours adults spend on formal exercise each week lies between 0.45 and 7.94.

c.

We are 95% confident that the sample mean number of hours adults spend on formal exercise each week lies between 0.45 and 7.94.

d.

The population mean number of hours adults spend on formal exercise each week lies between 0.45 and 7.94.

e.

The sample mean number of hours adults spend on formal exercise each week lies between 0.45 and 7.94.