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1) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation...

1) The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 bowling balls is selected. What is the probability that the average weight of the sample is less than 11.00 pounds? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage.

2) A survey of high school students revealed that the numbers of soft drinks consumed per month was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average number of soft drinks consumed per month for the sample was between 28.3 and 30 soft drinks? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage.

math   Statistics-And-Probability   
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Answer #1

Solution M = 11.5 D=36 DIX(11:00): X-1 önhe 11-00 -11.5 2.7 1136) 0.5 . たり - 2C - Pszc 1 .0.45 EP (2(-1.1D) probability 20.13

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