[Step-by-Step] A random sample of 100 credit sales in a department store showed an average sale of $120.00. From past data, it is known that the standard
Question: A random sample of 100 credit sales in a department store showed an average sale of $120.00. From past data, it is known that the standard deviation of the population is $40.00.
- What is the 95% confidence interval of the population mean?
- What size sample should be selected to obtain a 0.95 probability of estimating the average sale within $5 or less?
Deliverable: Word Document 
(Solution Library) A sample of 16 cookies is taken to test the claim
![[Step-by-Step] Find the values of x that](/images/solutions/MC-solution-library-58586.jpg "[Step-by-Step] Find the values of x that satisfy the inequality 2≤")
[Step-by-Step] Find the values of x that satisfy the inequality 2≤
[Solution] Evaluate the expression
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