Could you please help solve the problem?

A cheerleading squad received a mean rating (out of 100 possible points) of IN} i B {In t or) in competitions over the previous three seasons. The same cheerleading squad performed in 36 local competitions this season with a mean rating equal to F2 in competitions. Suppose we conduct a one-independent sample z-test to determine whether mean ratings increased this season (compared to the previous three seasons] at a 0.05 level of significance. (.3) State the value of the test statistic. (Round your answer to two decimal places.) State whether to retain or reject the null hypothesis. O Retain the null hypothesis. O Reject the null hypothesis. (o) Compute effect size using ICohen's 0'. [Round your answer to two decimal places.) You may.r need to use the appropriate table in Appendix C to answer this