The following tables show the make-up of students in a school's math club. Male | Female | Totals Freshmen 3 5 8 Sophomores 6 4 10 Juniors 7 5 12 Seniors 4 6 10 Totals 20 20 40 P(juniors I male)? 3 20 4
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- You and your friends are comparing the number of times you have been to the movies in the past year. The following table illustrates how many times each person went to the movie theatre in each month. Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec John 1 3 5 2 3 1 4 3 1 Mary 1 1 1 3 3 2 4 1 2 Brian 1 3 2 1 4 5 3 2 1 3 Kelly 2 2 1 1 3 2 4 1 3 2 3 1 4. Which month, by comparing the means of movies seen in each month, is the most popular movie-watching month? 5. By comparing medians, which month is the least popular month? 6. What is the mean of the medians for each month (the arithmetic average of the medians of the number of movies seen in each month)? 2.A researcher records the number of employees of each of the IT companies in the town of Westmoore. The results are summarized in the table. Number of Employees Number of IT Companies 0-249 33 250-499 22 500-749 8 750-999 7 Find the class width. Group of answer choices 250 5 1249 249.5Recently a community college offered a 2-credit course to help students with math anxiety. At the beginning of the course, each student took a 30-question survey (called MARS-S); the higher the score, the more anxiety experienced by the student. The nine students remaining in the class took the same survey at the end of the course. The before and after scores for each of the nine students who completed the course are shown below, student before after 1 72 69 66 52 3 83 71 97 85 95 61 78 45 95 56 8. 52 43 93 62 Compute the correlation between before and after scores for these students. (Assu conditions have been satisfied and round your answer to the nearest 0.001.) the correlation Question Help: D Video O Message instructor Submit Question 目 Cip Co %23 24 96 & 4. 5 7 8. 9.
- K A university conducted a survey of 387 undergraduate students regarding satisfaction with student government. Results of the survey are shown in the table by class rank. Complete parts (a) through (d) below. Click the icon to view the table. 美 Data table Satisfied Neutral Not satisfied Total Freshman Sophomore Junior Senior 51 48 62 59 28 20 18 13 23 21 18 26 102 89 98 98 Total D₁ 220 79 88 387The following tables show the make-up of students in a school's math club. Male Female Totals Freshmen 3 5 8 Sophomores 4 10 Juniors 7 5 12 Seniors 4 10 Totals 20 20 40 P(female I freshman)? 4 20A firm randomly surveys 300 people out of the 3,000 people who have shopped in the store (only one location) in the last month and bought something. They are trying to determine how many people bought more than three items. The firm made sure that 50% were males and 50% were females. They found that 91 people bought more than three items and 209 bought three or less items. Which value represents the population? 3,000 300 91 Question 10 From the previous question what was the sample? 3000 300 O 91
- A manufacturing plant makes computer chips 24 hours a day. Employees work one of three, 8 hour shifts during the morning (2am-10am), day (10am-6pm), and night (6pm-2am). Below are data on the number of defective chips on a randomly chosen 24 hour period. Shift Morning Day Night Number of Defective Chips 23 26 47 Total Chips Manufactured 330 330 330 The plant manager thinks there might be more defective computer chips manufactured during the night shift compared to the day shift. Give appropriate statistical evidence to test the managers' claim.In your Statistics class, your final grade is based on four categories. The categories are tests, labs, assignments, and a final exam. Suppose you earned the following grades in each of the categories; 65% on tests, 71% on labs, 69% on assignments, and 41% on the final exam. If tests are worth 13%, labs are worth 6%, assignments are worth 6%, and the final exam is worth 75%, determine your final grade in the course. Record the grade below as a percentage accurate to two decimal places. Final Grade: Check Answer pe here to search ※一 F11 F1 F3 F4 F5 F6 F7 F8 F9 F10 #3 %24 6 7 8 R T Y U S G J K C VB M この (7 134 DICecil has blue, red, green, and black pens in his bag. This table shows how many of each type of pen he has in his bag. Pen Color Number ofPens Blue 6 Red 4 Green 2 Black 8 Cecil randomly chooses a pen from his bag. Which statement is true based on this data? A.The pen is 4 times more likely to be red than it is to be green. B.The pen is 3 times more likely to be blue than it is to be green. C.The pen is more likely to be blue than it is to be black. D.The pen is equally likely to be blue, red, green, or black.
