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.
- Red: (0.85,0.97)
Yellow: (0.86, 0.98)
- 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%
- H0: p=0.095
- Ha: P<.095
- P hat= 0.0920
Test results from stat disk are as follows:
Claim: p < p(hyp)