AT&T would like to test the hypothesis that the average revenue per retail user for Verizon Wireless customers equals $50. A random sample of 32 Verizon Wireless customers provided an average revenue of $54.70. It is believed that the population standard deviation for the revenue per retail user is $11.00. AT&T would like to set α = 0.05. Use the p-value approach to test this hypothesis.

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

Evaluate cos2θ for cosθ = square root of 3/2

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