Problem 1 15 points A Statistics class has 26...

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NI.AT 22I lÙIay 4,2009 NAME TEACHER (please circle one) SECTION MEETING TIME Instructions: Work all 9 problems on the test paper. You may turn in additional pages if needed, but make sure your name is on each page. You may use your calculators, but be sure to explain what calculations were done by the calculator so you can receive pafüal credit for the method if the final ans\ryer turns out to be wrong. All necessary tables are attached. No books, notes, or collaboration with others. ALL CELL PHONES MUST BE TURNED OFF AND PUT AWAY DURING THE TEST (Please do not write below. The table below is for grading purposes.) Severn Shaw Wall Final Exam Problem I 2 Points J 15 4 7 5 Score 10 6 15 7 l0 8 t2 9 Total 6 10 15 100
Problem 1. (15 points) A Statistics class has 26 students. Each week the students homework assignment worth 70 points. Here are the scores on last week's 5232630314143444s4s4949 49 51 53 54 56 57 59 59 64 68 70 70 (a) Make a stemplot of data. (b) Find the five number srunmary. Does the data contain any outliers? evidence. (c) Make a boxplot. have a homework: 65 67 these Give
Problem 2 (7 points) Bags of chips are marked with a weight of 40 ounces. of the bags actually varies according to a normal distribution with mean:40 ounces standard deviation = 1.8 ounces. If a bag is selected at random, what is the probabilþ that it actually than42 ounces? The weight and weighs more
Problem 3. (10 points) The mean height of American women in their early about 64.5 inches and the standard deviation is about 2.5 inches. The mean height men in their early twenties is about 68.5 inches and the standard deviation about 2.7 inches. The correlation between the heights of husbands and wives r : 0,5. (a) What is the equation of the regression line of the husband's height wife's height (x) in young couples? (b) Predict the height of the husband of a woman who is 68 inches tall. answer reasonable? twenties is of American is is about (y) on the Is this