PLEASE SOLVE CORRECTLY ASAP...... THANKS

For a random sample of 500 students aged 15-17 in the United States, the numbers of hours a week usually spent on talking on a phone are summarized below for female students and male students. (Source of data: Census at School - United States). Group sample size sample mean sample standard deviation female 277 4.07 10.6 male 223 2.13 4.3 a) identify the population parameters and state the hypothesis of the two-sided significance test comparing two population means. b) Calculate the test statistic c) Explain how to make a conclusion for the significance test described in part a , using the 0.01 significance level. Interpret your conclusion in context. d) Construct a 99% confidence interval for the difference between the population means of number Of hours per week usually spent on talking on the phone for females students and male students. e) Interpret the confidence interval found in part d in context. |