#9 help on my final

9 (16 pts). Complete the hypothesis. Show all steps. A parenting magazine reports that the average number of phone call's teenage girls make per night is at least 4. For her science project, Ella sets out to prove the magazine is wrong. She claims that the average among teenage girls in her area is less than reported. Ella collects information from 25 teenage girls at her high school and calculated an average of 3.4 calls with a standard deviation of 0.9 calls. Test Ella's claim at the 0.01 level of significance