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Question 1 Determine which of the...

Question 1

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Nationalities of survey respondents.

Nominal

Ordinal

Ratio

Interval

Question 2

Perform the requested conversions. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent, if necessary. Convert the fraction 7/11 to an equivalent decimal and percentage.

0.756, 75.6%

0.636, 63.6%

0.636, 6.36%

0.756, 756%

Question 3

Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience. 49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively.

Random

Cluster

Systematic

Stratified

Convenience

Question 4

Identify the type of observational study (cross-sectional, retrospective, prospective). A town obtains current employment data by polling 10,000 of its citizens this month.

Cross-sectional

Prospective

Retrospective

None of these

Question 5

Provide an appropriate response. The following frequency distribution analyzes the scores on a math test. Find the class midpoint of scores interval 40-59.

Scores Number of Students

40-59 2

60-75 4

76-82 6

83-94 15

95-99 5

49.0

50.5

48.5

49.5

Question 6

Construct the cumulative frequency distribution that corresponds to the given frequency distribution.

Speed Number of Cars

0-29 4

30-59 16

60-89 60

90-119 20

Question 8

Find the original data from the stemplot.

Stem Leaves

23 45 90

24 20 34 73

25 45 90

2345, 2346, 2421, 2434, 2473, 2545, 2591

68, 113, 44, 58, 97, 70, 115

68, 113, 58, 58, 97, 70, 115

2345, 2390, 2420, 2434, 2473, 2545, 2590

Question 9

Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values. The local Tupperware dealers earned these commissions last month: $1077.28, $2661.13, $4642.11, $4264.15, $1019.55, $3444.20, $2525.92, $3740.26, $3533.07, $1633.84 What was the mean commission earned? Round your answer to the nearest cent.

$3171.28

$2848.15

$3567.69

$2854.15

Question 10

Find the median for the given sample data. The distances (in miles) driven in the past week by each of a company's sales representatives are listed below. 107, 114, 214, 230, 436, 445Find the median distance driven.

222 mi

220.50 mi

230 mi

214 mi

Question 11

Find the midrange for the given sample data. The speeds (in mph) of the cars passing a certain checkpoint are measured by radar. The results are shown below. Find the midrange. 44.3, 41.4, 42.4, 40.7, 43.1, 40.3, 44.5, 41.4, 44.3, 42.1 43.4 41.4 40.7 43.4 41.4

4.20 mph

42.30 mph

42.1 mph

42.40 mph

Question 12

Solve the problem. A student earned grades of C, A, B, and A. Those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. The grading system assigns quality points to letter grades as follows: A=4, B=3, C=2, D=1, and F=0. Compute the grade point average (GPA) and round the result to two decimal places.

8.75

2.18

3.50

3.40

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Nationalities of survey respondents.

Nominal

Ordinal

Ratio

Interval

Question 2

Perform the requested conversions. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent, if necessary. Convert the fraction 7/11 to an equivalent decimal and percentage.

0.756, 75.6%

0.636, 63.6%

0.636, 6.36%

0.756, 756%

Question 3

Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience. 49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively.

Random

Cluster

Systematic

Stratified

Convenience

Question 4

Identify the type of observational study (cross-sectional, retrospective, prospective). A town obtains current employment data by polling 10,000 of its citizens this month.

Cross-sectional

Prospective

Retrospective

None of these

Question 5

Provide an appropriate response. The following frequency distribution analyzes the scores on a math test. Find the class midpoint of scores interval 40-59.

Scores Number of Students

40-59 2

60-75 4

76-82 6

83-94 15

95-99 5

49.0

50.5

48.5

49.5

Question 6

Construct the cumulative frequency distribution that corresponds to the given frequency distribution.

Speed Number of Cars

0-29 4

30-59 16

60-89 60

90-119 20

Question 8

Find the original data from the stemplot.

Stem Leaves

23 45 90

24 20 34 73

25 45 90

2345, 2346, 2421, 2434, 2473, 2545, 2591

68, 113, 44, 58, 97, 70, 115

68, 113, 58, 58, 97, 70, 115

2345, 2390, 2420, 2434, 2473, 2545, 2590

Question 9

Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values. The local Tupperware dealers earned these commissions last month: $1077.28, $2661.13, $4642.11, $4264.15, $1019.55, $3444.20, $2525.92, $3740.26, $3533.07, $1633.84 What was the mean commission earned? Round your answer to the nearest cent.

$3171.28

$2848.15

$3567.69

$2854.15

Question 10

Find the median for the given sample data. The distances (in miles) driven in the past week by each of a company's sales representatives are listed below. 107, 114, 214, 230, 436, 445Find the median distance driven.

222 mi

220.50 mi

230 mi

214 mi

Question 11

Find the midrange for the given sample data. The speeds (in mph) of the cars passing a certain checkpoint are measured by radar. The results are shown below. Find the midrange. 44.3, 41.4, 42.4, 40.7, 43.1, 40.3, 44.5, 41.4, 44.3, 42.1 43.4 41.4 40.7 43.4 41.4

4.20 mph

42.30 mph

42.1 mph

42.40 mph

Question 12

Solve the problem. A student earned grades of C, A, B, and A. Those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. The grading system assigns quality points to letter grades as follows: A=4, B=3, C=2, D=1, and F=0. Compute the grade point average (GPA) and round the result to two decimal places.

8.75

2.18

3.50

3.40

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