Normal Calculator Standard Between x 8.1.29-T Question Help f(x) 0.4+ The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials. Complete parts (a) through (d). D. The variable "weekly time spent watching television" is likely skewed left, not normally distributed. 0.3. O E. The variable "weekly time spent watching television" is likely normally distributed. (b) According to a certain survey, adults spend 2.35 hours per day watching television on a weekday. Assume that the standard deviation for "time 0.2 spent watching television on a weekday" is 1.93 hours. If a random sample of 50 adults is obtained, describe the sampling distribution of x, the mean amount of time spent watching television on a weekday. x is approximately normal with ux = 2.35 and ox = 0.272943 0.1 (Round to six decimal places as needed. (c) Determine the probability that a random sample of 50 adults results in a mean time watching television on a weekday of between 2 and 3 hours. -2 of The probability is 0.8911 . (Round to four decimal places as needed.) (d) One consequence of the popularity of the Internet is that it is thought to reduce television watching. Suppose that a random sample of 45 Mean: 0 Std. Dev.: 1 individuals who consider themselves to be avid Internet users results in a mean time of 1.94 hours watching television on a weekday. Determine the likelihood of obtaining a sample mean of 1.94 hours or less from a population whose mean is presumed to be 2.35 hours. P(X 5 -1.26 ) = 0.10383468 The likelihood is 0.1038 . (Round to four decimal places as needed.) Compute Enter your answer in the answer box and then click Check Answer. ? 47 48 49 2 parts remaining Clear All Check Answer 50 151 A W E MacBook Air esc F1 20 F3 888 F4 F5 F6 DD F7 A F10 F11 @ # $ % 2 3 6 9 O Q W E R T Y U O P