The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students. scores range from 0 to 200. the mean score for u. s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 25 students who are at least 30 years of age. their mean score is attitudes toward school. the survey of study habit= 127.8.

(a) assuming that ? = 30 for the population of older students, carry out a test of

h0: ? = 115

h0: ? > 115

report the p-value of your test, and state your conclusion clearly.

(b) your test in part (a) required two important assumptions in addition to the assumption that the value of ? is known. what are they? which of these assumptions is most important to the validity of your conclusion in part (a)?

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation:

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two

the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation: