Suppose that 14% of the people in a large city have used a hospital emergency room in the past year. If a random sample of 155 people from the oty is taken, approximate the probability that at most 22 used an emergency room in the past year. Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps. (4f necessary, consult a liat of formulas.)

Assume that a procedure yields a binomial distribution with n 1143 trials and the probability of success for one trial is p = 0.48. Find the mean for this binomial distribution. (Round answer to one decimal place.) Find the standard deviation for this distribution. (Round answer to two decimal places.) Use the range rule of thumb to find the minimum usual value u-20 and the maximum usual value p+2o. Enter answer as an interval using square-brackets only with whole numbers. usual values =

A gardener buys a package of seeds. Seventy-five percent of seeds of this type germinate. The gardener plants 90 seeds.  Find the probability that 60 or fewer of the seeds germinate.  Use the normal approximation to the binomial with a correction for continuity.  Use Table A.2 (Normal Distribution Table) and keep four decimal places with your answer.  Intermediate calculations should be carried to a minimum of four decimal places.

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