A local grocery store kept track of the types of items sold in 2 hours.

Grocery Item #Sold
Produce 15
Deli 4
Dry Goods 20
Frozen Foods 11

Express the ration that compares the amount of produce sold to the total number of grocery items sold.

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to