Fulirtime college students report spending a mean of 32 hours per week on academic activities' both inside and outside The classroom Assume The standard deviation of time spent on academic activities is 5 hours Complete parts (a) through (d) below a. It you select a random sample of 25 fulletime college studehts' what is the probability that the mean time spent on academic activ'ties is at least 30 hours per week?' .9772 (Round to tour decimal places as needed.) I). If you select a random sample on lull-time college students there is an 80% chance that the sample mean is less than how many hours per week? (Round to two decimal places as needed)