Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Based on the 1990 census, the number of hours per day adults spend watching television is approximately normally distributed with a mean of 5 hours

Based on the 1990 census, the number of hours per day adults spend watching television is approximately normally distributed with a mean of 5 hours and a standard deviation of 1.3 hours.

  1. What proportion of the population spends more than 7 hours per day watching television?
  2. In a 1998 study of television viewing, a random sample of 500 adults reported that the average number of hours spent viewing television was greater than 5.5 hours per day. Do the results of this survey appear to be consistent with the 1990 census? (Hint:If the census results are still correct, what is the probability that the average viewing time would exceed 5.5 hours?)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

A First Course in General Relativity

Authors: Bernard Schutz

2nd edition

521887054, 978-0521887052

More Books

Students also viewed these Mathematics questions

Question

How high is the cost of switching from one supplier to another?

Answered: 1 week ago