Math please help
posted by LADO
According to a study conducted by a statistical organization, the proportion of americans who are satisfied with the way things are going in their lives is 0.82. Suppose that a random sample of 105 Americans is obtained.
(Please answer the below and round to four decimals places).
(A) What is the probability that 77 or fewer Americans in the sample are satisfied is?_

Damon
need standard deviation sigma
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