Here is an assignment using minitab and some statistics i need help with.
MBA 501A – [STATISTICS]
ASSIGNMENT 3
INSTRUCTIONS: Please note that point allocation varies per question.
Use the Help feature in MINITAB 16 to read descriptions for the data sets so that you can make meaningful comments.
[15 pts] 1. Use the data set PULSE.MTW.
a)
Construct a 95% confidence interval for the proportion of students who smoke regularly. [5 pts]
b) Construct a 99% confidence interval for the proportion of students who smoke regularly. [5 pts]
c) Interpret your results. [5 pts]
[20 pts] 2. Use the data set UGRADSURVEY.MTW in the Student 14 folder.
a)
At , test whether at least 75% of students download songs over the internet. Explain your results. [10 pts]
b)
At , test whether more than 10% of students participate in chat rooms over the internet. Explain your results. [10 pts]
[10 pts] 3. Use the data set ENDOWMENT.MTW in the Student14 folder.
a)
Test whether the average endowment is at least $2,250,000. Use .
[15 pts] 4. Use the data file RESTRNT.MTW.
a) Construct a 95% confidence interval for the mean number of full-time employees. [5 pts]
b) Construct a 95% confidence interval for the mean number of seats in the dining area. [5 pts]
c) Interpret your results. [5 pts]
[20 pts] 5. Use the data file ASSESS.MTW in the Student14 folder.
a)
At , test whether at least 10% of homes are Bi-level (Height). Explain your results. [10 pts]
b)
At , test whether the mean acreage is 1.5 acres. Explain your results. [10 pts]
[20 pts] 6. Use the data file UGRADSURVEY.MTW in the Student 14 folder.
a)
At , test whether the average number of times logged onto the internet each day is at least 5. Explain your results. [10 pts]
b)
At , test whether the average number of minutes logged onto the internet each day is at least 200. Explain your results. [10 pts]
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