Suppose that the number of weekly hours spent by gamers playing video games is normally distributed with a mean of 12 hours/week and standard deviation of 2.20 hours/week. a. What is the probability that a randomly selected gamer will spend less than 10.00 hoirs/week playing video games? Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability= b. What is the probability that a random sample of four gamers will spend, on average, under 10.00 hours/week playing video games? Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability= c. What is the probability that a random sample of nine gamers will spend, on average, under 10.00 hours/week playing video games? Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability=

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Suppose that the number of weekly hours spent by gamers playing video games is normally distributed with a mean of 12 hours/week
and standard deviation of 2.20 hours/week.
a. What is the probability that a randomly selected gamer will spend less than 10.00 hoirs/week playing video games?
Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal
places.
Probability=
b. What is the probability that a random sample of four gamers will spend, on average, under 10.00 hours/week playing video games?
Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal
places.
Probability
c. What is the probability that a random sample of nine gamers will spend, on average, under 10.00 hours/week playing video games?
Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal
places.
Probability=
Transcribed Image Text:Suppose that the number of weekly hours spent by gamers playing video games is normally distributed with a mean of 12 hours/week and standard deviation of 2.20 hours/week. a. What is the probability that a randomly selected gamer will spend less than 10.00 hoirs/week playing video games? Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability= b. What is the probability that a random sample of four gamers will spend, on average, under 10.00 hours/week playing video games? Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability c. What is the probability that a random sample of nine gamers will spend, on average, under 10.00 hours/week playing video games? Round your z value to two decimal places. Do not round any other intermediate calculations. Round your answer to four decimal places. Probability=
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