A random sample of 68 households was selected for a phone survey. The key question asked was, "Do you or any member of your household own a product from Company A?" Of the 68 respondents, 34 said yes and 34 said no. a. Determine the sample proportion, p, of households that own a Company A product. b. If the population proportion is 0.75, determine the standard error of the proportion.

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