According to a certain​ survey, adults spend 2.25 hours per day watching television on a weekday. Assume that the standard deviation for​ “time spent watching television on a​ weekday” is 1.93 hours. If a random sample of 60 adults is​ obtained, describe the sampling distribution of x​, the mean amount of time spent watching television on a weekday.   x is approximately normal is approximately normal has a uniform distribution with μx=2.352.35 and σx=0 comma 120,12. ​(Round to six decimal places as​ needed.)   ​(b) Determine the probability that a random sample of 60 adults results in a mean time watching television on a weekday of between 2 and 3 hours.   The probability is nothing. ​(Round to four decimal places as​ ne

The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials.
​(a) According to a certain​ survey, adults spend

2.25

hours per day watching television on a weekday. Assume that the standard deviation for​ “time spent watching television on a​ weekday” is

1.93

hours. If a random sample of

60

adults is​ obtained, describe the sampling distribution of

x​,

the mean amount of time spent watching television on a weekday.

 
x
is approximately normal
is approximately normal
has a uniform distribution

with

μx=2.352.35

and

σx=0 comma 120,12.
​(Round to six decimal places as​ needed.)
 
​(b) Determine the probability that a random sample of

60

adults results in a mean time watching television on a weekday of between 2 and 3 hours.

 
The probability is

nothing.

​(Round to four decimal places as​ needed.)

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