in a controlled laboratory environment, a random sample of 10 adults and a rando
ID: 3269510 • Letter: I
Question
in a controlled laboratory environment, a random sample of 10 adults and a random sample of 10 children were tested by a psychologist to determine the room temperature that each person finds most comfortable. (Full question and answers in photo) In a controlled laboratory envwironment, a random sample of 10 adults and a random sample of 10 children were tested by a psychologist to determine the room temperature that each person finds most comfortable. The data are summarized below Adults(1) Children(2) Find the standard error of the estimate for the diference in mean comfortable room temperatures between adults Sample Mean 77.5° F 74.5° F Sample Variance 4.5 2.5 and children. A. .7000 B. 1.6399 O C. 1871 O D. 8367 Click to select your answer 8:11 PM 8/14/2017Explanation / Answer
Variance1 = 4.5 , variance 2 = 2.5
Std.deviation1 = 2.12 , std.deviation 2 = 1.58 , n1 = n2 = 10
Standard error = sqrt(s1^2/n1 + s2^2/n2)
= sqrt( 2.12^2/10 + 1.58^2/10)
= 0.8367
Answer is option D)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.