Multiple Choice
Progressive Insurance would like to test the hypothesis that a difference exists in the proportion of students in 12th grade who text while driving when compared to the proportion of 11th grade drivers who text. A random sample of 160 12th grade students found that 84 texted while driving. A random sample of 175 11th grade students found that 70 texted while driving. If Population 1 is defined as 12th grade drivers and Population 2 is defined as 11th grade drivers, the 95% confidence interval for the difference in population proportions is ______.
A) (- 0.119, 0.369)
B) (0.018, 0.231)
C) (- 0.037, 0.287)
D) (0.103, 0.147)
Correct Answer:

Verified
Correct Answer:
Verified
Q2: The pooled variance is the weighted average
Q3: Progressive Insurance would like to test the
Q4: The approximate standard error of the difference
Q5: When conducting a hypothesis test comparing two
Q6: The pooled variance is used to calculate
Q8: The Centers for Disease Control (CDC)would like
Q9: The Centers for Disease Control (CDC)would like
Q10: The test statistic for hypothesis tests comparing
Q11: The Centers for Disease Control (CDC)would like
Q12: The degrees of freedom for the appropriate