The following data represents the number of Sony TVs sold per day at a particular Costco over a random sample of five business days.9 2 7 7 5The mode of this sample is ________.
A) 2
B) 4
C) 6
D) 7
Q. 2Which of the following statements is true regarding the normal probability distribution?
A) The mean and median are roughly equal to one another.
B) The mean is always greater than the median.
C) The mean is always less than the median.
D) The mean is always greater than the mode.
Q. 3The following table shows the percentage of e-mails that are sent each day of the business week according to an Intermedia survey.
Day Percentage
Monday 15
Tuesday 23
Wednesday 22
Thursday 21
Friday 19
Which of the following best displays this data?
A) horizontal bar chart
B) vertical bar chart
C) pie chart
D) histogram
Q. 4The probability of the intersection of two events is known as a ________ probability.
A) marginal
B) joint
C) simple
D) prior
Q. 5The ________ is the best measure of central tendency for categorical data.
A) mean
B) median
C) weighted mean
D) mode
Q. 6The hypothesis statement H: < 60 is an example of an alternative hypothesis.
Indicate whether the statement is true or false
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