can you please explain this question

T ? E i sa.amazonawa.cam C I 0 m E] In-Class Problem Solving: (10 points) Name: Date: In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the following data have been gathered. Downtown Store North Mall Store Sample size 25 20 Sample mean $9 $8 Sample standard deviation $2 $1 (a) Formulate the null and alternative hypotheses to test whether there is a difference between the average h0urly wages of employees of two branches of a department store. (b) Compute the test statistic. (c) Using the critical approach, what is y0ur conclusion? Let a = .05. (d) Using the pvalue approach, what is y0ur conclusion? Let a = .05