Answer Happy

& minutes Suppose the standard The mean number of minutes for app engagement by a tablet user deviation is 2 minut We select a random sample of 50 tablet users and measure the mean time spent on each app. 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 X PRI Sample stre Mean Standard deviation Distribution a. What are the mean and standard deviation for the sample mean number of minutes for app engagement by a tablet user? Round your answer to four places as needed. and og P Hint: See answers from the table above b. What is the standard error of the mean Hint: The standard error of the mean is the same c. Find the 90 percentile for the sample OXs normally distributed 8.04. 8.32 P(8.1 < X < 9.3) - 804 years. (Round your answer to one decimal place) d. Find the probability that the sample mean is between 8.3 minutes and 9.3 minutes Round your answer to four decimal places standard deviation of X rapp engagement for a tablet user 2- 86 xx2 *6 KAST 9.16 94 *** 5.36 SA Round your answer to four decimal places