athx.ccmi BUSN 5760 OC SU 2017 Applied Business Statistics Test Week 4 Midterm E
ID: 3258325 • Letter: A
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 possibleExplanation / 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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