Sample size calculation
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Please answer the question below in Excel explaining your steps on how you calculate it and formulas
6. A door-to-door sales person for a household appliance has learned from her past experience that out of ten demonstrations of her appliance only four result in actual sales (long run average). This week she needs to make at least five sales. At least how many demonstrations does she need to perform to ensure that the probability of meeting her target is at least 90 percent? Try to answer this question playing with cumulative probabilities.
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Step by step method for computing test sample size is given in the answer.
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Please answer the question below in Excel explaining your steps on how you calculate it and formulas
6. A door-to-door sales person for a Household appliance has learned from her past experience that out of ten demonstrations of her appliance only four result in actual sales (long run average). This week she needs to make at least five sales. At least how many demonstrations does she need to perform to ensure that the probability of meeting her ...
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