5. Use the given degree of confidence and sample data to construct a confidence interval for the population mean p. Assume that the population has a normal distribution.
Thirty randomly selected students took the calculus final. If the sample mean was 83 and the standard deviation was 13.5, construct a 99% confidence interval for the mean score of all students.
о
76.93<<89.07
78.81

о
76.23

76.21<<89.79