A social science researcher collected data from a random sample
of 400 students at a large university and found that, on average,
they belonged to 2.6 campus organizations. The standard deviation σ
for the population is 1.8.
Using these data, construct a 95% confidence interval for µ, the
mean number of campus organizations belonged to by the population
of students at this university.
Write a sentence to interpret your confidence interval, making
sure to provide all the important information.