The random variable x is exponentially distributed, where x represents the time it takes for a person to choose a birthday gift. if x has an average value of 25 minutes, what is the probability that x is less than 28 minutes? (do not round until the final step. round your answer to 3 decimal places.)

0.674

Step-by-step explanation:

If the random variable X is exponentially distributed and X has an average value of 25 minutes, then its probability density function (PDF) is

and its cumulative distribution function (CDF) is

So, the probability that X is less than 28 minutes is

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi

answer: i believe it’s 245.04

step-by-step explanation: