**STAT_3001_Final_exam_solutions[1]**

Check your solutions from the practice. Please be sure you fully understand all solutions before taking your exam.

- a. The type of study is observational with the variable of interest being the age of the student.

- (41.1, 50.9)

- a. 36 movies

b. 29 movies

c. 7 movies

d. About 230 minutes

- Part a: Median 139,500 Mean: 163,125

Part b: Outlier 34,000 Median: 140,000 Mean: 181,571.429

Part c: outlier 434,000 Median: 139,000 Mean: 124428.57

- a. The goal is to determine how many teachers would choose a different career if given the opportunity.

b. All US teachers.

c. A Percentage of teachers who would choose a different career.

d. The 2150 teachers who were questioned.

e. Raw data is teacher responses (yes no) to question if they would choose a different career.

f. 60% of teachers who said they would choose a different career.

g. 55%-65%

- Red: (0.85,0.97)

Yellow: (0.86, 0.98)

Blue: (0.86,0.94)

- From stat disk

Source: DF: SS: MS: Test Stat, F: Critical F: P-Value:

Treatment: 2 0.00224 0.00112 0.505269 6.112108 0.612123

Error: 17 0.03769 0.002217

Total: 19 0.03993

Fail to Reject the Null Hypothesis

There is not sufficient evidence to reject equality of means

The p value 0.61

We have sufficient evidence to claim the mean of all colors is the same.

- Expected probability of rolling a 2: 0.1667

Sample proportion: .22

Difference 0.0533, this is not statistically significant (p = .31)

- Null hypothesis: The mean of all three players are the same

Alternative hypothesis: the mean of at least one player is different

The p value is 0.036

At this level we must reject Ho and conclude at least one mean is statistically different.

- The minimum sample size is 364 students
- a. 58%

b. 74%

c. 82%

d. 78%

- H
p=0.095_{0}:- H
_{a}: P<.095 - P hat= 0.0920
- Z=-0.33

- H

d. No

**Test results from stat disk are as follows:**

Claim: p < p(hyp)

**Category:**Business, General Business

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