An educational organization in California is interested in estimating the mean number of minutes per day that children between the age of 6 and 18 spend watching television per day.
A previous study showed that the population standard deviation was 21.5 minutes. The organization selected a random sample of n = 200 children between the ages of 6 and 18 and recorded the number of minutes of TV that each person watched on a particular day. The mean time was 191.3 minutes. If the leaders of the organization wish to develop an interval estimate with 98 percent confidence, what critical value should be used?A) z = 1.645
B) t = 2.38
C) Approximately z = 2.33
D) Can't be determined without knowing the margin of error.
Question 2
The sample mean is a parameter.
Indicate whether the statement is true or false
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Altamont Pass Wind Farm in California
Crossing the border at Calexico, California.
Organization of Proteins
Levels of Organization