Exam 4 In order to earn full points for this assignment, it is important to show your work on this Word document, whether that means submitting a copy of this document with handwriting, using shortcuts on your keyboard (c.g., instead of using I writing \"59mm taking pictures of your handwritten work and copying them to this document, or other strategies. As a reminder, you can download free screen capture software 1%. For this item, 50% of the grade will be from showing your work and 50% of your grade will be from having a correct answer. Question 1: We surveyed college students during the COVID19 pandemic and asked them \"how concerned are you about your ability to pay for your education in fall 2020?\" On a scale from 1 = not at all concerned to 5 = extremely concerned, we found that the mean (it) was 2.44 and standard deviation (5) was 1.2? for 45 students who responded to the item. A. What is the standard error for the mean? Use the below equation to assist you: SE = [sh] = [127N451 = 0.189320422 333 J27: B. What is the 99% condence interval for the mean? Show yOur work by copying'pasting yOur results from My (how you derived the t' value you used) and write the condence interval using the standard condence interval language. Write the response using standard condence interval language {c.g., we are 99% condent that. . .). Use the below equation to assist you: Statistic :t t* - SE afn-l =45 -1 =44 t-test with 44 degrees of freedom at 0.01 alpha level t' Em\" = 2.692 99M = x' :t t' SE 99% = 2.44 :l: 2 .692(0.189320422) 99M = 2.44 :I: 050965 99% CI = (1.93035, 2.94965) We are 99% condent that the true population mean for college students during COVID- 19 pandemic on how concerned they are about the ability to pay for education in fall 2020 is between 1.93035 and 2.94965. C. Test the null hypothesis that all students should, on average, be \"not at all concerned" about their ability to pay for their education (He: |.l = 1). What do you conclude? Use the below equation to assist you: t _ Statistic - Null _ SE