An administrator at a large high school was interested in the types of school-sponsored extracurricular activities in which students participated: only academic clubs, only intramural sports clubs, both type of clubs, or neither. The responses from a survey of 500 students selected at random are summarized in the frequency table below, shown by class standing. 1st year 2nd year 3rd year 4th year Total Only Academics 30 40 60 60 190 Only Sports 35 30 20 20 105 Both 25 15 5 5 50 Neither 70 55 25 5 155 Total 160 140 110 90 500 If the school assumes extracurricular participation is independent of class standing, which of the following expressions could be used to calculate the expected number of respondents who do not participate in any academic or intramural activities during their 4th year at the school? (5)(155) (A) 500 (90)(155) (B) 500 @ @ (E) 90 155

A reviewer decides to interview viewers to see how they would rate a particular movie. The following table lists the responses from twenty-five viewers. Construct a frequency distribution for the data Movie Ratings Bad Awful Bad Average Good Average Great Good Great Average Great Good Good Good Great Awful Average Great Awful Average Great Bad Good Awful Great

Sixty students were given a history exam. Their scores are shown below, sorted from smallest to largest. 21 32 36 37 37 37 38 39 40 40 41 42 44 46 48 50 53 65 72 72 72 72 73 74 74 75 75 76 76 76 76 77 77 77 77 78 79 79 80 80 80 81 81 82 82 82 82 83 83 85 85 86 86 88 88 89 91 91 93 94 1) Compute the 5-number summary for this data: 12,_,_,_,94

Here is a set of sample data. 83 89 32 94 18 38 74 30 79 21 84 99 88 25 72 46 93 49 5 7 28 82 52 47 19 85 58 22     Base on the data above, identify the 5 number summary , , , ,

Here is a set of sample data. 96 52 19 97 98 67 93 45 57 41 89 60 66 5 42 32 71 73 90 33 53 35 24 85 9 75 Base on the data above, identify the 5 number summary , , , ,

The director of library services at a college did a survey of types of books (by subject) in the circulation library. Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Subject Area Percent of Books on Subject in CirculationLibrary on This Subject Number of Books inSample on This Subject Business 32% 237 Humanities 25% 220 Natural Science 20% 223 Social Science 15% 128 All other subjects 8% 80 Using a 5% level of significance, test the claim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance?State the null and alternate hypotheses. H0: The distributions are the same.H1: The distributions are different.H0: The distributions are the same.H1: The distributions are the same.    H0: The distributions are different.H1: The distributions are different.H0: The…

A magazine identified the following five "maintenance" activities often performed by people as summer approaches; 1. Prep the car for road trips; 2. Clean up the house or apartment; 3. Groom the garden; 4. Exercise the body; 5. Organize the wardrobe. The following data are the responses of 30 people who were asked, on June 1st, how many of the five they had accomplished. Complete parts (a) through (c) below. Click the icon to view the data. 0 O A. Frequency 1 2 3 4 5 14 6 13% 10% 7% 3% (b) Construct a histogram. Choose the correct graph below. 15- 12- 4 3 2 1 0 1 2 3 4 5 Activities Performed 47% 20% Q O B. Frequency 오오오오오오 0 1 2 3 4 5 Activities Performed Q Q Frequency SNSSO 15- Data Table 0 1 2 3 4 5 Activities Performed 1 4 3 0 0 1 Q 0 0 2 Print 0 1 4 1 3 0 Frequency 2 0 0 Full data set 0 0 2 1 20 300 5 0 1 Done 0 1 2 3 4 5 Activities Performed Q

To compare two elementary schools regarding teaching of reading skills, 12 sets of identical twins were used. In each case, one child was selected at random and sent to school A, and his or her twin was sent to school B. Near the end of fifth grade, an achievement test was given to each child. The results follow:  Twin Pair 1 2 3 4 5 6 School A 80 145 118 90 112 118 School B 83 135 115 105 105 113 ​ Twin Pair 7 8 9 10 11 12 School A 98 112 115 144 124 96 School B 93 87 98 132 135 105 ​ Suppose a sign test for matched pairs with a 1% level of significance is used to test the hypothesis that the schools have the same effectiveness in teaching reading skills against the alternate hypothesis that the schools have different levels of effectiveness in teaching reading skills. Let p denote portion of positive signs when the scores of school B are subtracted from the corresponding scores of school A.…