Suppose that 15 of all invoices are for amounts greater than 1,000. A random sample of 60 invoices is taken. What is the probability that between 13 and 23 of these 60 invoices are for more than 1,000?
A) 0.4591
B) 0.2019
C) 0.1664
D) 0.6255
Question 2
An assembly line will be shut down for maintenance if the defect rate exceeds 2.3. Suppose you adopt a 5 significance level and take a random sample of 200 items from the assembly line and compute the proportion of defective items.
For what values of the sample proportion will the assembly line be shut down?A) 0.034
B) 0.038
C) 0.036
D) 0.040
Greater sage grouse
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