According to the National Association of Colleges and Employers, the average hourly wage of an undergraduate college student working as a co-op is $17.27 and the average hourly wage of a college student working as an intern is $16.57. Assume that such wages are normally distributed in the population and that the population variances are equal. Suppose these figures were actually obtained from the data below. Co-Ops Interns $16.97 $16.23 16.38 15.58 17.51 17.34 18.55 16.04 1847 14.93 19.00 17.15 15.68 17.38 - . - 15.68 17.38 17.04 17.02 18.37 15.12 16.18 17.61 16.88 16.88 16.27 17.55 Appendix A Statistical Tables (a) Use these data and a = 0.10 to test to determine if there is a significant difference in the mean hourly wage of a college co-op student and the mean hourly wage of a college intern. *(Round your answer to 2 decimal places, e.g. 0.75.) **(Round your answers to 4 decimal places, e.g. 0.758%. Enter negative amount using a negative sign preceding the number e.g. -0.758%.) Observed t = (a) Use these data and a = 0.10 to test to determine if there is a significant difference in the mean hourly wage of a college co-op student and the mean hourly wage of a college intern. *(Round your answer to 2 decimal places, e.g. 0.75.) **(Round your answers to 4 decimal places, e.g. 0.7589. Enter negative amount using a negative sign preceding the number e.g. -0.7589.) Observed t = The decision is to (b) Using these same data, construct a 90% confidence interval toestimate the difference in the population mean hourly wages ofcollege co-ops and interns. 90% Confidence Interval: #* = U1 - /25