Confidence interval if increase in value of alpha

Assignment Help Basic Statistics

Reference no: EM1319566

Q1) Assume that 300 students who are fans of the TV show "The Office" are sampled and 231 of them had GPAs higher than 2.5. Then 400 students who dislike that TV show are sampled and 272 of them have GPAs higher than 2.5. Determine the 95% confidence interval for difference between proportions of students having GPAs higher than 2.5.

1) (-1.96,1.96)

2) (0.68,0.77)

3) (0.023,0.157)

4) (0.056,0.124)

5) None of the above (do allow for slight rounding errors/table differences in selecting your solution)

Q2) All else being equal, what occurs to your confidence interval when you increase value of alpha?

i) Your probability (confidence) increases and your interval gets wider

ii) Your probability (confidence) decreases and your interval gets wider

iii) Your probability (confidence) increases and your interval gets narrower

iv) Your probability (confidence) decreases and your interval gets narrower

v) None of the above

Reference no: EM1319566

Questions Cloud

Stocks value at its highest : What is the stock's value at it's highest on 15 days of the year? (Assume that there are 240 trading days in a year).

Implementing model to check the vulnerability : Construct a simple threat model which explains the risk this represents: attacker(s), vulnerability, assets, attack vector, and the likelihood of occurrence, likely impact, and the plausible mitigations.

Assume to john smith gets promoted to a job : Assume to John Smith gets promoted to a job to cause two changes to occur simultaneously: John earns a higher wage also safer environment

Making of classified balance sheet : From the following data, prepare a classified balance sheet for Simon Company at December 31, 2006.

Confidence interval if increase in value of alpha : All else being equal, what occurs to your confidence interval when you increase value of alpha?

Probability of finding manufacturers expense : Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?

More lipstick or more eye shadow : Explain why she should buy more lipstick or more eye shadow. Elucidate how your calculations also then elucidate your answer.

Preparation of a classified balance sheet : Preparation of a classified balance sheet-From the following data, prepare a classified balance sheet for Simon Company at December 31, 2006.

Two segments to market for rental cars demand for rental car : Assume to there are two segments to the market for rental cars. The Demand for rental cars by trade travelers

User Account

All Pages