# Economics and Business Statistics.

please explain

We are testing whether the average time employees stay with a company is less than three years, given that a randomly selected sample of 64 employees has a mean of 2.76 years and a standard deviation of 0.8 years. We assume a normal distribution. Our conclusion will be:

a) Reject the Null at 5% significance level but not at 1% level.

b) Reject the Null at 10% significance level but not at 5% level.

c) Reject the Null even at 1% significance level

d) Cannot reject the Null even at 10% significance level

e) Reject the Null at 5% significance level but not at 10% level