The distribution of Master’s degrees conferred by a university is listed in the table. Major Frequency Mathematics 216 English 207 Engineering 86 Business 176 Education 267 What is the...

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The distribution of Master’s degrees conferred by a universityis listed in the table.

Major

Frequency

Mathematics

216

English

207

Engineering

86

Business

176

Education

267

What is the probability that a randomly selected studentgraduating with a Master’s degree has a major of Education or amajor of Engineering?

A. 0.371 B. 0.720 C. 0.390 D. 0.280

2.

The data below are the final exam scores of 10 randomly selectedstatistics students and the number of hours they studied for theexam.

Hours, ?

3

5

2

8

2

4

4

5

6

3

Scores, ?

65

80

60

88

66

78

85

90

90

71

A). Calculate the correlation coefficient.

B). Find the equation of the regression line.

C). Use the regression equation to predict the test score of astudent who studied for 5.5 hours.

3. Find the ?-score for which 70% of the distribution’s arealies to its right.

A. -0.52 B. -0.98 C. -0.48 D. -0.81

4. A group of 49 randomly selected students has a mean age of22.4 years. Assume the population standard deviation is 3.8.Construct a 98% confidence interval for the population mean.

A. (20.3, 24.5) B. (18.8, 26.3) C. (21.1, 23.7) D. (19.8,25.1)

5.Use fundamental counting principle to determine how manylicense plates can be made consisting of 3 different lettersfollowed by 2 different digits.

A. 1,757,600 B. 175,760 C. 100,000 D. 1,404,000

6. A group of students were asked if they carry a credit card.The responses are listed in the table.

Class

Credit Card

No Credit Card

Total

Freshmen

40

20

60

Sophomore

25

15

40

Total

65

35

100

If a student is selected at random, find the probability thathe/she owns a credit card given that the student is a freshman.

A. 0.400 B. 0.615 C. 0.667 D. 0.333

7. Use the standard normal distribution to find ?(?2.50 < ?< 1.50).

A. 0.8822 B. 0.5496 C. 0.6167 D. 0.9270

8.

The number of home runs that Barry Bond hit in the first 18years of his major league career are listed.

16 25 24 19 33 25 37 41 37

25 42 40 37 34 49 73 46 45

A). Find the mean.

B). Find the median.

C). Find the mode.

Answer & Explanation Solved by verified expert
3.8 Ratings (602 Votes)
1Total frequency 216267 952PEducation 267952 02805PEngineering 86952 00903PEducation or Engineering 02805 0090303708Thus the probability that a randomly selected studentgraduating with a Masters degree has a major of Education or amajor of Engineering 037082AThe correlation coefficient r 08465BThe    See Answer
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