Average talk time between charges of a cell phone is advertised as 4 hours. Assu

Question

Average talk time between charges of a cell phone is advertised as 4 hours. Assume that talk time is normally distributed with a standard deviation of 1.3 hour. Use Table 1 a. Find the probability that talk time between charges for a randomly selected cell phone is below 2.9 hours. Round "z" value to 2 decimal places and final answer to 4 decimal places.) Probability 0.2004 b. Find the probability that talk time between charges for a randomly selected cell phone is either more than 5.2 hours or below 2.2 hours. (Round "z" value to 2 decimal places and final answer to 4 decimal places.) Probability c. Twenty two percent of the time, talk time between charges is below a particular value. What is this value? (Round "z" value to 2 decimal places and final answer to 3 decimal places.) Value 2.999 Hints References eBook& Resources d) if cooperation is ensured, both will cooperate and earn $150 each

Explanation / Answer

Average talk time between charges of a cell phone is advertised as 4 hours. Assume that talk time is normally distributed with a standard deviation of 1.3 hour. Use Table 1 a. Find the probability that talk time between charges for a randomly selected cell phone is below 2.9 hours. Round "z" value to 2 decimal places and final answer to 4 decimal places.) Probability 0.2004 b. Find the probability that talk time between charges for a randomly selected cell phone is either more than 5.2 hours or below 2.2 hours. (Round "z" value to 2 decimal places and final answer to 4 decimal places.) Probability c. Twenty two percent of the time, talk time between charges is below a particular value. What is this value? (Round "z" value to 2 decimal places and final answer to 3 decimal places.) Value 2.999 Hints References eBook& Resources d) if cooperation is ensured, both will cooperate and earn $150 each

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