In Excel, contingency tables are known as ______________.
A) pivot tables
B) bins
C) frequency distributions
D) bar charts
Q. 2Which one of the following statements is true for a symmetrical distribution?
A) The mean is greater than the median.
B) The mean is less than the median.
C) The mean is greater than the mode.
D) The mean is roughly equal to the median.
Q. 3According to LIMRA, 77 of husband-wife families with kids under 18 years old have life insurance. A random sample of six husband-wife families was selected. What is the probability that less than two families have life insurance?
A) 0.0029
B) 0.0569
C) 0.1197
D) 0.1864
Q. 4The hypothesis statement is an example of a one-tail hypothesis test.
Indicate whether the statement is true or false
Q. 5The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 minutes. What is the probability that a randomly selected exam will require less than 20 minutes to grade?
A) 0.3715
B) 0.6328
C) 0.8106
D) 0.9230
Q. 6The null hypothesis is also known as the research hypothesis because it represents the position the researcher wants to establish.
Indicate whether the statement is true or false
Quick Reply
