A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.8 years, and standard deviation of 2.2 years. If 5 items are picked at random, 5% of the time their mean life will be less than how many years?

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Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?