A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 20 children selected at random and finds that their mean attention span is 32 minutes with a standard devlation of 4 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 find the lower limit and upper limit of the 95% confidence interval. Carry your Intermedlate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: | Upper limit:

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O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING
On O OD
Confidence interval for the population mean: Use of the t..
A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 20 children selected at random and finds that their
mean attention span is 32 minutes with a standard deviation of 4 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 find the lower limit and upper limit of the 95% confidence Interval.
Carry your Intermedlate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)
Lower limit: l
Upper limit:
Explanation
Check
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45
Transcribed Image Text:y utrgv.edu E Announcements - MATH-1342 x A ALEKS - Raul Barrera - Learn i www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNsikasNW8D8A9PVVR18Z4766mukQengouPuJ6IEWNMG9szFIOinqsu7WHMBju03qoCLWNwiSQ-k5A0qYtzosblyoviLEWFBp O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING On O OD Confidence interval for the population mean: Use of the t.. A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 20 children selected at random and finds that their mean attention span is 32 minutes with a standard deviation of 4 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 find the lower limit and upper limit of the 95% confidence Interval. Carry your Intermedlate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: l Upper limit: Explanation Check 2021 McGraw-Hil Education. All Rights Reserved Terms of Use Pivacy Access %23 9 45
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