is nomally distributed and that the standard deviation is 15 minules. Complote parts (a) through (d) below. 2. What is the probabify that an 18 - 1024 -year-old spends less than 110 minutes watching video on his or her smarfphone per moner? The probatility that an 18 - to 24 -year-old spends lese than 110 minutas watching video on his or her smartphone per month is (Found to four decimal places as needed) b. Whit is the probabelify that an 18 - to 24 -year-old speods botween 110 and 145 minulos watching video on his or het smartphone per month? The probability that an 18 - to 24 -yearald spends between 110 and 145 mimutes watching video con his or her smartphone per month is (Round to four decimal places is needed) c. What is the probablify that an 18 - 1024 -yeac-old spends more than 145 minutes watching video on his or her smartiphone per month? The probabify that an 181624 year-old spends more than 145 minutes watching video on fis or her martphone per month is (Found to four docimal places in needed) d. One percent of al 18- to 24 -year-olds wal spend less than how many minules watching video on his or her smartphone per month? (Round to two decimal places is needed)