(co 4) forty-nine percent of us teens have heard of a fax machine. you randomly select 12 us teens. find the probability that the number of these selected teens that have heard of a fax machine is exactly six (first answer listed below). find the probability that the number is more than 8 (second answer listed below).

Which expression is equivalent to 2x^2+7x+4?

Which of the following graphs represents the function f(x) = 2^x

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