Question 323877
A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 18 children selected at random and finds that their mean attention span is 27 minutes with a standard deviation of 6 minutes. If we assume that attention spans are normally distributed, find a 95 confidence interval for the mean attention span of children playing with this new toy. Then complete the table below. 
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
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I ran a TInterval program on a TI-84 to get:
95CI: 24.016< u < 29.984
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Cheers,
Stan H. 
What is the lower limit confidence interval?
What is the upper limit confidence interval
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