In a recent study reported Oct. 29, 2012 on the Flurry Analytics Blog website (flurry.com/blog), the mean age of tablet

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In A Recent Study Reported Oct 29 2012 On The Flurry Analytics Blog Website Flurry Com Blog The Mean Age Of Tablet 1 (59.3 KiB) Viewed 14 times

In a recent study reported Oct. 29, 2012 on the Flurry Analytics Blog website (flurry.com/blog), the mean age of tablet users is 33 years. Suppose the standard deviation is 10 years. Take a sample of size n=144. Check off the following that are true. At least one must be true. On > 30 Complete the following table for the distribution of X and X. Round the standard deviation of X (standard error of the mean) to four decimal places as needed. X 1 Sample size Mean P15 Standard deviation Distribution OX is normally distributed 31.34 32.17 33 10 3134 32.17 Unknown a. Find the probability that the sample mean age is more than 30 years (the reported mean age of tablet users in this particular study). Select an answer P(X ≥ 30) = b. Find the 75th percentile for the sample mean age (to one decimal place). X 33 33.83 34.66 X Round your answer to four decimal places 33 X 133.83 34.66 X years. (Round your answer to one decimal place) 35.4 Q 35.4