Construct a stem and leaf display, given the following data from a sample of midterm exam scores in finance 54 63 S 91 72 95 55 100 56 Fill in the stem-and-leaf display below Ases 89 78
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Q: None
A: Step 1:Step 2:Step 3:Step 4:
Given that
The data are 54, 63, 91, 72, 95, 55, 56, 89, 78
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- A Statistics teacher wants to know if students exposed to the use of technology in the classroom got significantly higher scores in Statistics exam than those who are exposed to the traditional chalk and talk method. She took a sample of 30 students exposed to technology and recorded their Statistics exam scores: 95 88 81 98 81 80 83 80 91 80 75 83 88 85 81 85 83 86 89 88 90 89 88 85 87 86 66 85 65 95She then took a sample of 40 students who were taught using the traditional method 88 78 81 87 91 90 83 84 66 81 80 74 73 71 66 60 78 78 65 60 71 85 89 79 80 83 75 73 80 71 65 71 89 81 75 60 82 80 90 83 Help the teacher verify the hypothesis at α = 0.05.Construct a stem and leaf diagram and find * :the median for the following data 36 50 70 66 99 87 75 95 67 64 80 98 83 51 47 71 53 81 63 89 99 55 67 69 38 64 70 55 79 57 60 85 62 70 56 78 65 51 86 39The Student Union President conducted a survey to estimate the proportion of first year students who participated in the social activities organized by the Student Union. Which of the following surveying options does NOT affect the presidents ability to generalize the survey to all first year students. The president put the survey on the Student Union webpage a Monday and collected the responses at the end of the week. All of the other options present a problem for generalizing the results. The president polled all students coming out of the Student Union on a given Monday. The freshmen class consists of 3000 students. A random sample of only 300 were sent a survey. Only 150 responded. The survey was sent only to first year students enrolled in statistics courses because all students need to satisfy a statistics general education requirement.
- In statistics, the data we work with is just one part of a bigger picture called the ____. In statistics, the data we work with is just one part of a bigger picture called theAccording to the financial reports by Snapchat, the average daily user of Snapchat created 19 messages, or "snaps," per day in Q3 2017. A college student wants to find out if the number of Snapchat messages has changed since Q3 2017 and creates a random sample using information from students on her campus for the current semester, with the accompanying results. Complete parts a through Click the icon to view the daily snaps data. C. a. Using a = 0.01, test the hypothesis that the number of Snapchats sent by the average Snapchat user has not changed since Q3 2017. Determine the null and alternative hypotheses. Hot = 19 19 H₁: (Type integers or decimals. Do not round.) Determine the appropriate critical value. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) O A. O B. -ta= OC. ±¹/2 t = t Daily Snaps G 22 13 9 18 15 33 8 23 27 27 22 31 20 16 19 33 31 5 Print 15 D 21 Done - X(0.5,3.4),(0.2,3.7),(1.2,5.5),(2.9,7.3),(3.4,7.9),(2.4,5.9),(4.4,8.1),(4.5,7.9),(4.9,7.9),(3.3,6.6) Compute the coefficients of polynomials of degrees 3,4,5,6,7,8,9(3 to 9) that approximates the above data points in the least-square sense using Cholesky factorization.
- 6. Construct a stem-and-leaf for the data with a 1-digit stem, leaves do NOT need to be in order. 644, 581, 431, 644, 820, 773, 899, 417, 858A business reports that their average salary is over $91,000, the simple mean of the salaries listed in the chart. Alternatively, instead of a simple mean, the business could report the median, or the mode. Which would be the most useful to someone deciding whether to apply for an entry level job at this business? Job Number of Employees Salary Line workers 10 $30,000 Office manager 1 $45,000 CEO 1 $200,000 Select one: a. Simple mean is best b. Simple mean and median are nearly equal numerically. They are equally good for this purpose and better than the other options. O c. Simple mean and mode are equally good for this purpose and better than the other options. d. Median and mode are about equally good for this purpose and better than other options.Complete the stemplot for the following data. 31 37 48 28 30 34 54 39 22 41 43 33 28 55 49 31 35 58 36 29 20 48 23 30 34 22 20 36 34 31 2# | 002238893# | 001113444566794# | 138895# |
- Are there any outliers?Construct a stem-and-leaf display for the following data. Use a leaf unit of 10. Note: if there is nothing to fill in the box, you should leave it empty. If your answer is "zero" enter "0". 1,369 1,770 1,108 1,691 11 12 13 14 15 16 17 1,344 1,246 1,561 1,121 1000000 0000000 0000000 1,771 1,147 1,120 1,313 1,236 1,728 1,556 1,664fill blanks underlines.
