Nationwide Insurance would like to perform a chi-square test to investigate whether a difference exists in the proportion of male and female teenagers who text while they drive.
A random sample of 80 male teenagers found that 50 indicated they texted while driving. A random sample of 120 female teenagers found that 65 indicated they texted while driving. Using = 0.5, the conclusion for this chi-square test would be that because the test statistic is_________________ ___________________ ___________________ ___________.A) more than the critical value, we can reject the null hypothesis and conclude that there is a difference in the proportion of male and female teenagers who text while they drive
B) less than the critical value, we can reject the null hypothesis and conclude that there is a difference in the proportion of male and female teenagers who text while they drive
C) more than the critical value, we cannot reject the null hypothesis and conclude that there is no difference in the proportion of male and female teenagers who text while they drive
D) less than the critical value, we cannot reject the null hypothesis and cannot conclude that there is a difference in the proportion of male and female teenagers who text while they drive
Question 2
Chris is employed by Silver Lake Resort in Orlando, Florida, and sells timeshares. The following table shows the number of timeshare sales for Chris for each quarter over the past three years.
Period Quarter Sales Period Quarter Sales
1 1 10 7 3 12
2 2 16 8 4 8
3 3 11 9 1 13
4 4 7 10 2 17
5 1 11 11 3 12
6 2 14 12 4 9
The deseasonalized number of sales for Period 9 is ________.
A) 11.0
B) 11.5
C) 12.6
D) 13.3
Guinea pig being injected to test a chemical for its carcinogenic properties
(A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive
Piaget’s Test for Egocentric Perspectives on Children
Kazimir Malevich, Black Square.
Rinne test. Air conduction
The fluctuation test of Luria and Delbrück