Qluestion7,8.1.25 In a family with 4 children, excluding multiple births, what is the probability of aving 3 boys and 1 girl? Assume that a girl is as likely as a boy at eacIN DA The probability of having 3 boys and 1 girl is (Type an integer or a simplified fraction.)
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Q: by which criteria?
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:
these are review questions , not test questions
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- The top 6 companies and the amount each spent on advertising in billions of dollars are as follows: Company At&T Advertising ($ billions) 3.5 Verizon Procter & Gamble L'Oreal Comcast Ford 2.4 4.1 2.1 3.7 2.7 Find the interquartile range for advertising (in $ billions). O a. 2.000 O b. None of the answers is correct OC. 1.475 Od. 1.825 O e. 1.350Recently 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.A lecturer selected 300 students in the college and classified the results of Business Statistics according to gender and level of results. Test whether the level of results is independent of the gender. Use a = 0.01. b) Level of result Gender Fail Pass Good Female Male 90 70 35 40 15 50
- Here are the top 10 season hitting percentages for members of two baseõall teams, and you must determine which is the best-hitting team, defined as the average. You have to decide which type of average you use and why. Do this by hand or use SPSS.Refer to the table below: Do you smoke? Sex Yes No Female 8 12 Male 3 10 How many people answered the question "Do you smoke?"?Martin collected data from students about whether they played a musical instrument. The table shows his results. Instrument No Instrument TOTAL Вoys 40 68 108 Girls 46 84 TOTAL 86 106 192 Of the students surveyed, how many played an instrument? The number of students surveyed who played an instrument is [
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