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QUESTION 10 A recent study of over 1000 parents on cyberbullying showed that a 95% condence interval of proportion of kids who faced bullying in social media sites and apps is (0.1459, 0.1818). Find the proportion of kids who faced bullying in social media sites and apps. Round your answer to four decimal places. : QUESTION 11 A computer supply store sells a wide variety of generic replacement ink cartridges for printers. A quality inspector is checking the cartridges that should contain 30 ml of ink. A random sample of 16 black replacement cartridges revealed a mean amount of 29.53 ml with a standard deviation of 0.52 ml . Assume that the underlying distribution of the amount of ink in these cartridges is normal. Find the 90% condence interval for the mean amount of ink in such cartridges. Round your answer to two decimal places. 0 (29.25, 29.81) 0 (29.15, 29.91) 0 (29.30, 29.76) 0 (29.32, 29.74) QUESTION 12 The manager of a small shopping mall wants to estimate the mean amount spent per shopping visit by customers. He computed a 95% condence interval based on a sample of 36 customers as (102, 368). What is the sample mean