When completing an online shopping transaction, a typical shopper takes 23 seconds to select each product and another 4 seconds to complete the check-out process. If it takes 50 seconds to complete a transaction, how many products are being purchased?

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

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit