The average weight of a thirtysix month boy in the United St

The average weight of a thirty-six month boy in the United States is approximately normally distributed with a rmean weight of 13.87 kg and a standard deviation of 0.84 kg. Suppose that we took a random sample of twenty-five, thirty-six month old boys. What is the probability that the sample average weight is 14.00 kg or more? Round answer to the ten-thousands place. Save Question 5 (1 point) It is estimated that 12% of drivers on the road continue to use their cell phones while driving despite laws or warnings that it is a dangerous activity. Assume that the 12% value is uppose that we took a r sample of 100 drivers on the road. What is the probability that we would see 22 or more drivers using their cell Round answer to the ten-thousands place. Save Question 6 (1 point) 7.5 4.33 15 X A random number generator is set to produce any real number between 0 and 15 and it is uniformly distributed. What is the probability that a sample average of 13 numbers produce an average less than 4? Round answer to the ten-thousands place.

Solution

Answer

a) 0.2195

b) 0.0010

c) 0.0018