Statistics

3486 words 14 pages
Stats Questions II

1.The table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. ??Over that time period, what was the mean daily level of sales?

A. ?$3,489.79
?B. $4,071.42
?C. $1,643.23
D. $2,829.92
2. The table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. ??Over that time period, what was the median daily level of sales?
A. $1,643.23
B. ?$3,489.79
C. ?$3,130.46
D. ?$800.12
3. The histogram below displays the age distribution of the world's billionaires as reported by Forbes Magazine in 2001. ??This distribution is best described as:

?A. Approximately normal.
?B. Strongly skewed to the right.
?C. Bimodal.
D. Approximately
…show more content…
?Assigning each sophomore a number and then randomly generating 70 numbers from that list.
B Randomly selecting 70 sophomores entering the university's main library on a randomly selected evening.
C ?Selecting the 70 sophomores whose grade point averages (GPA) fall closest to the mean GPA of the sophomore class.
D ?Randomly selecting 70 sophomores who are members of college fraternities.
11. A normal distribution is completely determined by: https://eproduct.hbsp.harvard.edu/eproduct/product/quant/content/item/6179/source_bibliography.xls A ?Its mean and its standard deviation.
B Its mean and its mode.
C Its mean and its median.
D None of the above.
12. The average height of American women is distributed normally, with a mean of 63.5 inches and a standard deviation of 2.5 inches. ??Approximately what percentage of American women are taller than 58.5 inches, but shorter than 68.5 inches?
A ?50%
B ?68%
C ?84%
D ?95%
13. The histogram below displays the distribution of income among households in the United States in 2001. Suppose a researcher takes a random sample of 60 households and calculates average household income in the sample. Suppose 99 other researchers conduct identical studies, each independently collecting a random sample of 60 households and computing the average household income in that sample.??Which of the following best describes

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