A simple random sample of 100 concert tickets was drawn from a normal population. The mean and standard deviation of the sample were $120 and $25,...

A simple random sample of 100 concert tickets was drawn from a normal population. The mean and standard deviation of the sample were $120 and $25, respectively. Test the claim that the mean price of the concert tickets is different from $125 at the 10% significance level. Use the confidence interval approach. Show all work for full credit.