Answer :
The expected result for a normally distributed sample is
mean, mu = 61
Std. deviation, sigma = 2.4
We have a random which indicates a mean of = 65.
To test the hypothesis that the sample is too old.
The null hypothesis is
H0: mu = 61
The alternate hypothesis is
Ha: mu > 61
mean, mu = 61
Std. deviation, sigma = 2.4
We have a random which indicates a mean of = 65.
To test the hypothesis that the sample is too old.
The null hypothesis is
H0: mu = 61
The alternate hypothesis is
Ha: mu > 61