Statistics Confidence Intervals

profileSeanofZdead
StatsProject.xlsx
Home>Mathematics homework help>Statistics homework help>Statistics Confidence Intervals

Week 3

Age Gender For the following questions, use only the "age" column:
38 Male
41 Female Points Age Frequency Distribution: Class Width 5
21 male
29 Female Class Limits Midpoint Freq. Relative Frequency Cumulative Relative Freq
38 male Low High
56 Female Limits 1 10 19 10 1 0.04 1
24 male Freq. 1 20 29 25 9 0.36 10
30 Male Mid. 1 30 39 35 11 0.44 21
56 Female RF 1 40 49 45 2 0.08 23
35 Male CF 1 50 59 55 2 0.08 25
35 Male
38 Male 2 Mean 32.36 *Round to two decimals
24 Male 2 Median 30 *Round to one decimal
30 female 2 Sample Standard deviation: 9.83 *Round to two decimals
21 female 2 Q1 24 *Round to one decimal
38 female 2 Q3 38 *Round to one decimal
30 Male
35 female
41 Male Ogive: 5 Ogive: Polygon:
26 male Polygon 5
20 Male
33 Male
28 Female
23 Male Total: 25
19 Male

Student Ages Ogive

19 29 39 49 59 1 10 21 23 25

Student Ages Polygon

Frequency 10 25 35 45 55 1 9 11 2 2

Week 5

Age Gender Points 95% Confidence Interval for Average Age of Online College Students:
38 Male
41 Female Sample Mean: 32.36
21 male Sample St. Dev: 9.83 Normal Distribution
29 Female 1 Sample Size: T-Distribution
38 male
56 Female 2 Distribution:
24 male
30 Male 2 Critical Value: *2 decimals
56 Female
35 Male 2 Margin of Error: *2 decimals Calculation:
35 Male 1 Lower Bound: *2 decimals Calculation:
38 Male 1 Upper Bound: *2 decimals Calculation:
24 Male
30 female Interpret
21 female 2
38 female
30 Male 95% Confidence Interval for Proportion of Male Online College Students:
35 female
41 Male 1 Sample Size:
26 male 1 Number of Males:
20 Male 2 Male Proportion: Female Proportion *4 decimals
33 Male
28 Female 2 Distribution:
23 Male
19 Male 2 Critical Value: *2 decimals
2 Margin of Error: *4 decimals Calculation:
1 Lower Bound: *4 decimals Calculation:
1 Upper Bound: *4 decimals Calculation:
Interpret
2
25 Total Points