Answered

Get the information you need from a community of experts on IDNLearn.com. Find the information you need quickly and easily with our comprehensive and accurate Q&A platform.

Use the normalcdf function on a calculator to find the probability that the battery life is 20 hours or longer for each phone.

Use The Normalcdf Function On A Calculator To Find The Probability That The Battery Life Is 20 Hours Or Longer For Each Phone class=

Sagot :

Sqdancefanidn

Answer:

  • C: 15.9%
  • T: 50%

Step-by-step explanation:

The calculator results are shown in the attachment.

__

For this question, the Empirical Rule is sufficient to tell you the answer to the nearest percent.

20 hours is 1 standard deviation above the mean (18+2=20) for the C phone. The empirical rule tells you that the probability of being above that value is (1 -68%)/2 = 16%, where 68% is the probability of being within 1 standard deviation of the mean.

20 hours is the mean for the T phone. You know that the normal distribution is symmetrical about its mean, so the probability of being above the mean is 50%.

View image Sqdancefan
Your participation means a lot to us. Keep sharing information and solutions. This community grows thanks to the amazing contributions from members like you. IDNLearn.com is committed to providing accurate answers. Thanks for stopping by, and see you next time for more solutions.