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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
25 Nov 2021

Given information

Given that the amount of time spent alone by a four-year-old Chinese child is normally distributed with mean of 3 hours and standard deviation of 1.5 hours.

Step-by-step explanation

Step 1.

Follow the provided steps of Ti-84 calculator to find the required value:

  1. Press 2ND > VARS > invNorm( > ENTER.
  2. Write area = 0.30 , mean = 1.5 and standard deviation = 3.
  3. Click on ENTER.

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