Question
(A) From a random sample of 48 business days from January 4, 2010, through February 24, 2017, US gold prices had a mean of $1368.48.
(A) From a random sample of 48 business days from January 4, 2010, through February 24, 2017, US gold prices had a mean of $1368.48. Assume the population standard deviation is $202.60. Find the margin of error and construct a 90% confidence interval.
(B) For problem 1, what would happen to the confidence interval if the sample size was increased to 75?
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Principles Of Topology
Authors: Fred H Croom
1st Edition
0486810445, 9780486810447
