According to a survey, 70% of households said that they have never purchased organic fruits or...
According to a survey, 70% of households said that they have never purchased organic fruits or vegetables. Suppose that this result is true for the current population of households.
A. Let x be a binomial random variable that denotes the number of households in a random sample of 10 who have never purchased organic fruits or vegetables. What are the possible values that x can assume?
Integers ??? to ???.
B. Find to 3 decimal places the probability that exactly 7 households in a random sample of 10 will say that they have never purchased organic fruits or vegetables. Use the binomial probability distribution formula.
Probability =???
Homework Answers
A) possible values that x can assume are integers 0 to 10
B)
| P(X=7)= | (10C7)0.77(1−0.7)(10-7) = | 0.267 |
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