Use the Student Data Table (pasted at the end) and follow the instructions below.

1. Devise a null and alternative hypothesis, then perform a one sample z-test using alpha=0.05 if our class is taller or shorter than the average human in the United States. Graphically display your answer and statistically write up results. In addition, determine the effect size of this relationship and interpret. Notes:
   1. The average height of adults in the United States is 67.03.8 inches. (Note: this is a population SD)
   2. Calculate and interpret the effect size (use Cohen's d): Cohen's d = (M_sample - _population) )
2. Devise a null and alternative hypothesis, then perform a t-test using alpha =0.05 if the students in our class that are born in warm weather months are taller or shorter than those born in cold weather months. Graphically display your answer and statistically write up results. In addition, determine the effect size of this relationship and interpret. Notes:
   1. Population SDs are unknown.
3. Assume the northern hemisphere: Warm months = April, May, June, July, August, September Cold months = October, November, December, January, February, March
4. Use Cohen's d effect size: Cohen's d = (M₂ - M₁) SD_pooled) where SD_pooled = ((SD1² + SD2²) 2)

ID	School Enrolled	Months Enrolled	Birthday Month	Distance to Work (whole miles)	Height (whole inches)	Foot Size (whole inches)	Hand Size (whole inches)	Sleep (minutes)	Homework (minutes)
1	Arts and Sciences	12	January	0	60	8	5	360	30
2	Applied Science and Technology	6	February	0	62	7	6	400	45
3	Business and Management	8	April	5	66	10	7	420	60
4	Nursing	10	June	10	68	12	8	440	15
5	Public Service	48	July	15	68	14	8	540	75
6	Arts and Sciences	48	June	30	70	12	9	480	120
7	Applied Science and Technology	36	October	32	72	11	8	320	80
8	Applied Science and Technology	32	November	36	75	14	7	440	60
9	Applied Science and Technology	2	July	21	66	10	7	360	30
10	Arts and Sciences	8	August	15	75	13	9	480	180
11	Arts and Sciences	4	August	13	66	9	7	420	120
12	Business and Management	49	October	31	73	12	7	435	70
13	Applied Science and Technology	12	January	5	70	11	8	420	70
14	Applied Science and technology	6	April	2	68	10	6	360	60
15	Applied Science and Technology	6	January	26	72	12	8	420	120
16	Applied Science and Technology	26	October	30	70	12	8	480	60
17	Applied Science & Technology	4	May	0	60	6	5	480	180
18	Applied Science & Technology	4	September	0	70	9	7	420	60