Question: Question 31 I need answers to D and E all the data is here The Quick Change Oil Company has a number of outlets. The

Question 31 I need answers to D and E all the data is here

The Quick Change Oil Company has a number of outlets. The numbers of oil changes at the Oak Street outlet in the past 20 days are as follows:

99 57

86 103 108 63 75 59 50 90 46 41 76 82 107 102 82 43 88 107

The data are to be organized into a frequency distribution using 5 classes.

b.What class interval would you suggest?(Round the final answer to the nearest whole number.)

14 Correct

c.What lower limit would you recommend for the first class?

40 Correct

d.Organize the information into a frequency distribution and determine the relative frequency distribution.(Round the final answers to 2 decimal places.)

UnitsFrequencyRelative frequency40

40 Correct

to under55

55 Incorrect

Not attempted

to underNot attempted

Not attempted

to underNot attempted

Not attempted

to underNot attempted

Not attempted

to underNot attempted

Not attempted

Total20

20 Correct

1 Correct

e.Comment on the shape of the distribution.(Enter the intervals in ascending order.)

The greatest concentration is in classes

Not attempted

up to

Not attempted

and

Not attempted

up to

Not attempted

Question 34 I just need H answered

The following stem-and-leaf chart reports the number of movies rented per day at Video Connection:

12 0 0 1 2 2 5

13 1 2 3

14 6 8 8 9

15 7 8 8

16 3 5

17 2 4 5 6 8

18 2 6 8

19 1 3 4 5 6

20 0 3 4 6 7 9

21 2 2 3 9

22 7 8 9

23 0 0 1 7 9

24 8

25 1 3

27 3 6

a.How many days were studied?

54 Correct

b.How many observations are in the last class?

2 Correct

c.What are the smallest and the largestvalues in the entire set of data?

120

120 Correct

,276

276 Correct

d.List the actual values in the fourth row.

157

157 Correct

,158

158 Correct

,158

158 Correct

e.Not available in Connect.

f.On how many days were less than 190 movies rented?

26 Correct

g.On how many days were 220 or more movies rented?

13 Correct

h.What is the middle value?(Round the final answer to 1 decimal place.)

198

198 Incorrect

i.On how many days were between 200 and 280 movies rented?

23 Correct

Question 40 I need the geometric mean

Compute the geometric mean of the following percentage increases: 1, 2, 3, 5, 8, 6, 4, and 2.(Round the final answer to 1 decimal place.)

The geometric mean%

question 47 I need the standard deviation

Determine the mean, median, and standard deviation of the following frequency distribution:(Round the final answers to 2 decimal places.)

ClassFrequency0 to under 5 4

5 to under 10 6

10 to under 15 14

15 to under 20 5

20 to under 25 5

Mean

Median

Standard deviation

Question 48

Advertising expenses are a significant component of the cost of goods sold. Listed below is a frequency distribution showing the advertising expenditures for 40 manufacturing companies. Estimate the mean, median, and standard deviation of advertising expense.(Round the final answers to 2 decimal places.)

Advertising Expenditure

($ millions)Number of companies

$15 to under $25 2

25 to under 35 8

35 to under 45 15

45 to under 55 10

55 to under 65 5

Total 40

Mean

Median

Standard deviation

Question 7 I need C and D answered

The following data give the weekly amounts spent on groceries for a sample of households:

$271 352 184 55 228 314 311 346 226 265 223 277 267 179 166 181 262 297 201 162 331 339 247 266 41 63 281 113 129 140 243 510 288 167 213 241 437 298 636 303 275 209 432 108 307

a.How many classes would you recommend?

Number of classes6

6 Correct

b.What class interval would you suggest?

Class interval100

100 Correct

c.What would you recommend as the lower limit of the first class?

Lower limit of the first class0

0 Incorrect

d.Organize the data into a frequency distribution.

ClassFrequency0

0 Incorrect

to under100

100 Incorrect

3 Incorrect

100

100 Incorrect

to under200

200 Incorrect

13 Correct

200

200 Incorrect

to under300

300 Incorrect

16 Incorrect

300

300 Incorrect

to under400

400 Incorrect

10 Incorrect

400

400 Incorrect

to under500

500 Incorrect

3 Incorrect

500

500 Incorrect

to under600

600 Incorrect

1 Correct

Total45

45 Correct

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