# ​​​​​​​Twelve students enrolled in Stat 1030 were surveyed for the number of hours that they spent studying

1697 Views

Twelve students enrolled in Stat 1030 were surveyed for the number of hours that they spent studying Stats Las weekend. The Survey answers are

1. 0.9 2.6 9.6 1.9 4.9 2.4 2.6 0.0 1.3 7.7

Suppose that the number of weekend hours spent studying Stats by all Stat 1030 students is not bell-shaped. What’s the best estimate of the maximum number of weekend hours sent studying Stats by the 25% of Stat 1030 Students who study the least?

1. 0.0  b)  4.9    c) 5.9  d) 9.9   e) None of the answers is correct to the first decimal place.

Questions 9 – 10

Psychologists tend to believe that there is a relationship between aggressiveness and order of birth. To test this belief, a psychologist chose 500 elementary school students at random and administered to each a test designed to measure the student’s aggressiveness. Each student was classified into

 First Born Not Firstborn Aggressive 15% 15% Not Aggressive 25% 45%

9. Is whether or not a student is firstborn related to aggressiveness?

a. yes, b, No  c, Impossible to determine

10. Suppose that the psychologist is scheduled to interview a student whom she has never met. If the students is firstborn, does this indicate a general tendency toward away aggressive behvior?