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For a data set obtained from a random sample, n=25 and x=48.25. It is known that ó=4.8

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For a data set obtained from a random sample, n=25 and x=48.25.  It is known that ó=4.8
A. What is the point estimate of µ?  Round to two decimal places.
B. What is the margin of error of estimate for part b? Round to two decimal places.
C. Make a 95% confidence interval for µ.  What is the lower limit? Round to two decimal places.
D. Make a 95% confidence interval for µ.  What is the upper limit?  Round to two decimal places.
Determine the sample size (n) for the estimate of µ for the following.
A. E=2.3, ó=15.40, confidence level = 95%.  Round to the nearest whole number.
B. E=4.1, ó=23.45, confidence level = 90%.  Round to the nearest whole number.
C. E=25.9, ó=122.25, confidence level = 99%. Round to the nearest whole number
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