Question: Now we are interested in time (hours) that a regular tulip flower lasts. Assuming that time (hours) that a regular tulip flower lasts is normally

  1. Now we are interested in time (hours) that a regular tulip flower lasts.

  1. Assuming that time (hours) that a regular tulip flower lasts is normally distributed. It is also known that the average hours that a regular tulip flower lasts is 250 hours and the standard deviation of hours that a regular tulip flower lasts is 40 hours.
    1. For a randomly chosen regular tulip (yet to bloom), what is the probability that its flower will last longer than 260 hours?

  1. For a random sample of 10 regular tulip flowers (yet to bloom), what is the probability that its average hours in the flowering stage is greater than 260?

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