toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 13 children selected at random and finds that their mean attention span is 31 minutes with a standard deviation of 8 minutes. If we assume that attention spans are normally distributed, find a 99% confidence interval for the mean attention span of children playing with this new toy. Give the lower limit and upper limit of the

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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 toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests

13

children selected at random and finds that their mean attention span is

31

minutes with a standard deviation of

8

minutes. If we assume that attention spans are normally distributed, find a

99%

confidence interval for the mean attention span of children playing with this new toy. Give the lower limit and upper limit of the

99%

confidence interval.

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