Question: In analyzing a lot with random sample variation, you find a sampling standard deviation of 5%. Assuming negligible error in the analytical procedure, how

In analyzing a lot with random sample variation, you find a sampling standard deviation of ± 5%. Assuming negligible error in the analytical procedure, how many samples must be analyzed to give 95% confidence that the error in the mean is within ± 4% of the true value? Answer the same question for a confidence level of 90%.

Step by Step Solution

3.44 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

s s 005 and e 004 The initial value of t for 95 confidence in Table 42 is 1960 n ... View full answer

blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Document Format (1 attachment)

Word file Icon

878-E-C-E-E-C (2477).docx

120 KBs Word File

Students Have Also Explored These Related Chemical Engineering Questions!