A report noted that for the population of 9th graders, one-third of the students are unable to pass a quiz in basic geography. One teacher, having spent a great deal of time on geography instruction, gave the same quiz to a group of n = 72. Only X = 18 students in the group did not pass the test. The teacher would like to know if the number of students in this class who failed the quiz is significantly different from the general population. For this test, what is the z-score corresponding to X = 18?
A) z = 0.375
B) z = -1.00
C) z = -1.50
D) z = 2.00
Question 2
A researcher obtains t = 2.35 for a repeated-measures study using a sample of n = 8 participants. Based on this t value, what is the correct decision for a two-tailed test?
A) Reject the null hypothesis with = .05 but not with = .01.
B) Reject the null hypothesis with either = .05 or = .01.
C) Fail to reject the null hypothesis with either = .05 or = .01.
D) Change to = .10.
Abiotic factors influence population densities.
The Dugong is an endangered species; the largest remaining population is found in Australian waters
How Seismic Waves Pass through Rock
To help his students understand the term generalized other, Mead used baseball as an illustration. ...
Siblings report on what life events triggered changes in their relationships with each other, how ...
The Impact of Cross-Ethnic Friendships on Minority Students’ Well-Being