A market research firm conducts telephone surveys with a 45% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least

150

400

= 0.375?

(Round your answer to four decimal places.)

You may need to use the appropriate appendix table or technology to answer this question. = 0.375? (Round your answer to four decimal A market research firm conducts telephone surveys with a 45% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150 places.) 400