Explore BrainMass

Find a Percentile from a Given Normal Distribution

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.9 hours. A psychologist would like to conduct interviews with the 15% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally distributed. At least how many hours of daily TV watching are necessary for a person to be eligible for the interview? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.

© BrainMass Inc. brainmass.com June 3, 2020, 9:47 pm ad1c9bdddf
https://brainmass.com/statistics/probability/percentile-given-normal-distribution-199525

Solution Preview

Problem: A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.9 hours. A psychologist would like to conduct interviews with the 15% of the population who spend the most time watching TV. She assumes that the daily time people spend watching TV is normally ...

Solution Summary

This solution shows how to find a percentile from a given normal probability distribution.

\$2.19