a toy manufacturer wants to see long, on averages, a new toy captures children's attention. He test
Fantastic news! We've Found the answer you've been seeking!
Question:
a toy manufacturer wants to see long, on averages, a new toy captures children's attention. He test 14 children selected at random and finds that their mean attention span is 20 minutes with a standard deviation of 7 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. Give the lower limit and upper limit of the 95% confidence interval.
Posted Date: