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Unformatted text preview: A. C. Neilsen reported that chiidten between the ages 'of 2 and 5 watch an average of 25 hours of television per week. Assume the variable is normally distributed and the
standard deviation is 3 hours. IfZO children between the ages of 2 and 5 are randomjy
selected, ﬁnd the probability that the mean of the number of hours they watch television
will be greater than 26.3 hours. The average age of a vehicle registered in the United States is 8 years, or 9o months.
Assume the standard deviation is 16 months. If a random sample of 36 VChIClES is
selected, ﬁnd the probabitity that the mean of their age is between 90 and 100 months. Some: Michael D Shook and Ruhr! L. Shock. 7711 Book ofﬂddk. a. Find the probability that a person selected at random consumes less than
224 pounds per year, [2. If a s c of 40 individuals is selected, ﬁnd the: probability {hat [email protected]
.\Lhc:s;:mm$will be less than 224 pounds per year. ' M '5 '. Q ‘3'“
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 Spring '08
 Patton
 Standard Deviation, A. C. Neilsen

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