athx.ccmi BUSN 5760 OC SU 2017 Applied Business Statistics Test Week 4 Midterm E

Question

athx.ccmi BUSN 5760 OC SU 2017 Applied Business Statistics Test Week 4 Midterm Exam This Question: 2 pts 22 of 25 (17 complete v The data below represents the overall miles per gallon (MPG) of 2008 SUVs priced under S30,000. Complete parts a and b below. 23, 20, 22, 22, 20, 18, 17, 17, 21, 19, 18, 16, 21, 19, 19, 19, 18, 17, 17 19, 17, 23 a. Corislruct a 95% confidence interval estirnale for the population rriven miles per gallon of 2000 S priced under $30,000, assuming a normal bution UN's L SHS ound to two decimal places as needed b. Interpret the interval constructed n Choose the correct answer bel O A. With 95 contidence, the mean miles per gallon in the sample of 2008 Suvs is the population mean O B. With 95'i contidence, the mean miles per gallon in the population ot 2008 Suvs is the sample mean O c. with 9b'sin contidence, the mean miles per gallon in the population ot 2008 suvs is somewhere in the interval. O D. with 95% cont ence, the mean miles per gallon in the sample ot 2008 suvs is somewhere in the interval. tid Click to select your answer(s). Dwayne Middleton 6/2217 8:18 PM Submit Test This Test: 45 pts possible

Explanation / Answer

Answer:

a). 95% CI = (18.26, 20.11)

b).

C: with 95% confidence, the mean miles per gallon in the population of 2008 SUV is somewhere in the interval.

Confidence Interval Estimate for the Mean

Data

Sample Standard Deviation

2.0848

Sample Mean

19.1818

Sample Size

22

Confidence Level

95%

Intermediate Calculations

Standard Error of the Mean

0.4445

Degrees of Freedom

21

t Value

2.0796

Interval Half Width

0.9243

Confidence Interval

Interval Lower Limit

18.26

Interval Upper Limit

20.11

Confidence Interval Estimate for the Mean

Data

Sample Standard Deviation

2.0848

Sample Mean

19.1818

Sample Size

22

Confidence Level

95%

Intermediate Calculations

Standard Error of the Mean

0.4445

Degrees of Freedom

21

t Value

2.0796

Interval Half Width

0.9243

Confidence Interval

Interval Lower Limit

18.26

Interval Upper Limit

20.11

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