Question

Answer all parts complete to get 100% feedback!!

The amount of time adults spend watching television is closely monitored by firms because this helps to determina advert sing pricing for commercials Complete parts (a) through (d) (a) Do you think the variable weekly time spent watching television would be normally distributed? Yes No If not, what shape would you expect the variable to have? O A. The variable weekly time spent watching television is oly skewed let OB. The variable weekly time spent watching television is oly skewed right OC. The variable Weekly time spent watching television is likely symmetric OD. The variable weekly time spent watching television is likely uniform (b) According to a certain survey adults spend 2 45 hours per day watching television on a weekday Assume that the standard deviation for time spent watching television on a weekday' is 19 hours. Ifara adults is obtained, describe the sampling distribution of the mean amount of time spent watching television on weekly and :-D (Round to six decimal places as needed) with

Answer 1

please rate if it is helpful

sol:- (a) No, the variable Weekly time spent watching is likely skewed sight. options) tiv (b) 11=2.45 6=1.93 n = 60 The mean of sampling distribution My = 4 =2.45 stand.dev ox et 1-43 VCO 0.24 9262 (C) P (24X<3) = A 3-2.45 L slo 0.249162 0,247162 = P focus <z< 0.55 0.249162 0-249162 P (-1.84% 2 <2.90) P ( ZL2.21) P(Z <-1081) .O.0351 0.9864 0.9513 !! (d) P (242-10) = p/X-4 olun 2.10 - 2.45 IN 1093/555 = P(z< -1.35) 0.08850 0.0886 yes, because probabebility is not large.