Chapter 6: Q. 43 (page 386)
How would you represent the area to the left of one in a probability statement?

Short Answer
The probability statement of the area to the left of one can be represented as
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Chapter 6: Q. 43 (page 386)
How would you represent the area to the left of one in a probability statement?

The probability statement of the area to the left of one can be represented as
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Facebook provides a variety of statistics on its Web site that detail the growth and popularity of the site.
On average, 28 percent of 18 to 34 year olds check their Facebook profiles before getting out of bed in the morning. Suppose this percentage follows a normal distribution with a standard deviation of five percent.
a. Find the probability that the percent of 18 to 34-year-olds who check Facebook before getting out of bed in the morning is at least 30 .
b. Find the percentile, and express it in a sentence.
³Ý´Ê±·(–)
What is the median?
What is the z-score of x=, if it is two standard deviations to the right of the mean?
If the area to the right of in a normal distribution is , what is the area to the left of?
Jerome averages points a game with a standard deviation of four points. . Suppose Jerome scores ten points in a game. The –score when is . This score tells you that is _____ standard deviations to the ______(right or left) of the mean______(What is the mean?).
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