Random Generation of Data Repeat Exercise 7 without making the assumption that the population standard deviation is known. Exercise 7 Random Generation of Data The TI-81/84Plus calculator can be used...

Random Generation of Data
Repeat Exercise 7 without making the assumption that the population standard deviation is known.

Exercise 7

Random Generation of Data
The TI-81/84Plus calculator can be used to generate random data from a normally distributed population. The command
randNorm(74, 12.5, 100)
generates 100 values from a normally distributed population with μ = 74 and σ = 12.5 (for pulse rates of women). One such generated sample of 100 values has a mean of 74.4 and a standard deviation of 11.7. Assume that is known to be 12.5 and use a 0.05 significance level to test the claim that the sample actually does come from a population with a mean equal to 74. Based on the results, does it appear that the calculator’s random number generator is working correctly?