sample of college freshman who purchased a laptop computer were asked the price
ID: 3298535 • Letter: S
Question
sample of college freshman who purchased a laptop computer were asked the price they paid. The results are provided in the table below. Fill in the values in the Cumulative Frequency Column.
A random sample of college students was selected and asked their preferred method of communication. The responses are summarized in the table below.
What was the sample size used?
A random sample of professors was taken. The professors were asked how many books they have in their offices. The responses are listed below.
31 35 38 51 55 57 62 66 69 71 74 78 84 85 88 101 112 113 120 126 194
You need to construct a grouped frequency table using the method discussed in Chatper 2. The table should have 7 classes. What would you use for the class width of the table?
A random sample of college students was selected and asked their preferred method of communication. The responses are summarized in the table below.
What is the percent for video chat? (Enter the answer in percent form)
A sample of college freshman who purchased a laptop computer were asked the price they paid. The results are provided in the table below.
What is the class width of this table?
What is the class midpoint of the last class?
Price Frequency Cumulative Frequency 405-449 11 450-494 29 495-539 43 540-584 30 585-629 17 630-674 12 675-719 9 720-764 4Explanation / Answer
Answer - 1:
Cumulative frequency distributions in order will be:
11
40
83
113
130
142
151
155
Answer - 2
Sample size = 44 + 30 + 56 + 10 = 140
Answer - 3
Percent of video chats = 16/(42 + 21 + 52 + 16) = 16/131 = 12.21%
Answer - 4
Class width = 45
Midpoint of last class = 742
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