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Hello would it be possible to show me how to get this answer manually and by...

Hello would it be possible to show me how to get this answer manually and by calculator. i would like to know how to do this by both methods. Thank you.

  1. An office supply company conducted a survey before marketing a new paper shredder designed for home use. In the survey, 80% of the people who tried the shredder were satisfied with it. Because of this high satisfaction rate, the company decided to market the new shredder. Assume that 80% of all people are satisfied with this shredder. During a certain month, 100 customers bought this shredder. Find the probability that of these 100 customers, the number who are satisfied is

  1. exactly 75
  2. 73 or fewer
  3. 74 to 85.
math   Statistics-And-Probability   
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