II. Short-Answers-Instructions: Give a brief answer to each question with clear
ID: 3052279 • Letter: I
Question
II. Short-Answers-Instructions: Give a brief answer to each question with clear reasoning (1) Scores on a statistics test have a mean of 70 and a standard deviation of 20. Is a unusually low? why or why not No because when you score of 40 average a ndd divide t bytof stidents ind the (2) When author Shere Hite wro e Women and Love: A Cultural Revolution in Progress, she drew her conclusions based on 4500 replies that she received after mailin various women's group. Are her concl applied to the general population of all wornen? why or why not? yes g 100,000 questionaires to lusions likely to be valid in the sense that they can be (3) The third quartile of the SAT scores of 64 randomly selected hight school st udents Ho w many of the students had SAT scores higher than 6507 dianapolis Colts recently won the Super Bowl, the numbers on the jerseys of the were 29, 41, 50,58,79,, 0 (listed in the alphabetical order of the player's names) ? why or why not? active players Does it make sense to calculate the mean of those nu becaue Yal (5) If the mean weight of 12 students is 120.5 1b and the mean we what is the mean weight for the remaining 4 students in the ght 8 of these students is 125 group? atreacts-putttemin ordenExplanation / Answer
a)
z-score =(40 - 70)/20 = -1.5
z-score less than -2 are unusually low
hence
ntot
2)
yes
3)
Q3 is point where 75 % of population score less than that score
hence 25 % score more than Q3
=25/100*64=16
4)
no,
because
nnumbers on the jersey does not mean anything