Greg purchased supplies for a party. He had a coupon good for 30% off. He purchased a helium tank rental with an original price of $31. 61, a sheet cake with an original price of $18. 44, a punch bowl with an original price of $12. 78, and paper decorations with an original price of $23. 69. Greg’s total came to $80. 99. To which item did Greg apply his coupon? a. Cake b. Helium tank rental c. Paper decorations d. Punch bowl.

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