A social psychologist is interested in finding out whether people who self-identify as shy are more likely to attend certain types of colleges. He surveys college-bound graduating seniors and asks them what type of college they plan to attend and whether or not they consider themselves shy. The following frequency distribution table summarizes the responses to the two survey questions. Not Shy Shy Total Liberal Arts College 73 35 108 Four-Year University 155 24 179 Community or Junior College 82 89 College Type Fill in the three missing values in the frequency distribution table. Agricultural, Technical, or Specialized College 582 239 Other 18 41 59 Total 910 The following questions walk you through the steps of a test of the null hypothesis that a student's choice of college type is independent of whether he self-identifies as shy. If a student's choice of college type is independent of whether he self-identifies as shy, then the expected frequency for the Shy/Agricultural, Technical, or Specialized College category is When you calculate the chi-square test statistic, you add up the contributions from each of the 10 categories. Each contribution consists of the squared difference between the expected and observed frequencies for that particular category, divided by the expected frequency-that is, (fo-fe)² / fe. The contribution of the Shy/Agricultural, Technical, or Specialized College category is The work of computing the contributions of each of the remaining nine categories has been done for you. The other nine categories combined contribute 88.769 to the chi-square test statistic. The value of the test statistic is therefore x² =

Create a stem and leaf diagram and a frequency histogram for the following situations. 1. The following data list represents the heights of 30 randomly selected adults. 63 73 58 56 64 68 72 63 67 59 62 68 70 67 71 64 62 64 75 64 67 60 63 62 71 68 7780 72 225 63 3365 9859 77222 88589

Among fatal plane crashes that occurred during the past 70 ​years, 332 were due to pilot​ error, 63 were due to other human​ error, 265 were due to​ weather, 290 were due to mechanical​ problems, and 478 were due to sabotage.      Construct the relative frequency distribution. What is the most serious threat to aviation​ safety, and can anything be done about​ it? Complete the relative frequency distribution below.   Cause Relative Frequency Pilot error nothing​% Other human error nothing​% Weather nothing​% Mechanical problems nothing​% Sabotage nothing​% ​(Round to one decimal place as​ needed.) What is the most serious threat to aviation​ safety, and can anything be done about​ it?     A. Weather is the most serious threat to aviation safety. Weather monitoring systems could be improved.   B. Mechanical problems are the most serious threat to aviation safety. New planes could be better engineered.   C.…

Among fatal plane crashes that occurred during the past 70 years, 684 were due to pilot error, 97 were due to other human error, 679 were due to weather, 240 were due to mechanical problems, and 218 were due to sabotage. Construct the relative frequency distribution. What is the most serious threat to aviation safety, and can anything be done about it? Complete the relative frequency distribution below. Cause Relative Frequency Pilot error % Other human error % Weather % Mechanical problems % Sabotage % (Round to one decimal place as needed.)

Among fatal plane crashes that occurred during the past 65 years, 517 were due to pilot error, 98 were due to other human error, 673 were due to weather, 60 were due to mechanical problems, and 139 were due to sabotage. Construct the relative frequency distribution. What is the most serious threat to aviation safety, and can anything be done about it? Complete the relative frequency distribution below. Relative Frequency Pilot error % 11 Other human error % Weather % Mechanical problems % Sabotage (Round to one decimal place as needed.) What is the most serious threat to aviation safety, and can anything be done about it? Cause % G O A. Pilot error is the most serious threat to aviation safety. Pilots could be better trained. O B. Sabotage is the most serious threat to aviation safety. Airport security could be increased. O C. Mechanical problems are the most serious threat to aviation safety. New planes could be better engineered. O D. Weather is the most serious threat to aviation…

The following data represents the age of 30 lottery winners.   24 26 27 29 30 34 37 42 45 45 46 48 49 50 51 52 55 56 61 64 67 68 68 71 71 74 75 77 78 89   Complete the frequency distribution for the data. Age Frequency 20-29   30-39   40-49   50-59   60-69   70-79   80-89

The following data represents the age of 30 lottery winners. 21 49 54 63 54 35 52 45 88 65 64 51 41 34 49 78 31 40 51 70 78 60 74 55 29 66 59 32 68 56 Complete the frequency distribution for the data. Bin Frequency 20-29 30-39 40-49 50-59 60-69 70-79 80-89

The following data represents the age of 30 lottery winners.   24 26 26 27 33 38 38 39 41 44 46 47 48 48 51 61 61 64 67 69 71 72 74 75 76 76 79 79 79 85   Complete the frequency distribution for the data. Age Frequency 20-29   30-39   40-49   50-59   60-69   70-79   80-89

A reviewer decides to interview patrons to see how they would rate a particular restaurant. The following table lists the responses from twenty-five patrons. Construct a frequency distribution for the data. Restaurant Ratings Five Stars One Star Two Stars Three Stars Four Stars Three Stars Four Stars Four Stars Five Stars Three Stars Five Stars Four Stars Five Stars Four Stars Five Stars One Star Three Stars Five Stars One Star One Star Five Stars Two Stars Four Stars Three Stars Five Stars

The following data represents the age of 30 lottery winners.   24 25 26 26 34 35 37 37 40 41 43 43 45 48 50 51 54 56 57 62 63 65 65 68 70 75 76 79 79 83 Complete the frequency distribution for the data.   Age Frequency 20-29   30-39   40-49   50-59   60-69   70-79   80-89