The Results of a Survey Showed That, on Average, Children

question 75

Essay

The results of a survey showed that, on average, children spend 5.6 hours at PlayStation per week. Suppose that the standard deviation is 1.7 hours and that the number of hours at PlayStation follows a bell-shaped distribution.
a. Use the empirical rule to calculate the percentage of children who spend between 2.2 and 9 hours at PlayStation per week.
b. What is the z-value for a child who spends 7.5 hours at PlayStation per week?
c. What is the z-value for a child who spends 4.5 hours at PlayStation per week?

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Definitions:

Socioeconomic Status

A measure of an individual or group's economic and social position based on income, education, and occupation.

Respite Care

Support services provided to caregivers, offering them a temporary break from caregiving duties.

Memory Activity

Activities or exercises designed to improve or maintain memory function, often used in cognitive therapy and brain health programs.

Older Adult

An individual usually defined as being at a later stage in life, often associated with retirement age and beyond, who may face specific health and social challenges.