SOLUTION: The population standard deviation is unknown. Data from a recent study suggests that 61% of the population that buys a certain product is female. In a sample of n = 200 people tha

Algebra ->  Probability-and-statistics -> SOLUTION: The population standard deviation is unknown. Data from a recent study suggests that 61% of the population that buys a certain product is female. In a sample of n = 200 people tha      Log On


   

Question 1080707: The population standard deviation is unknown.
Data from a recent study suggests that 61% of the population that buys a certain product is female. In a sample of n = 200 people that purchased this product, 136 were female. What is the expected frequency of male purchasers in this sample?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The population standard deviation is unknown.
Data from a recent study suggests that 61% of the population that buys a certain product is female. In a sample of n = 200 people that purchased this product, 136 were female. What is the expected frequency of male purchasers in this sample?
-----
E = n*p = 200*0.39 = 78
--------------
Cheers,
Stan H.
-------------------