Explore BrainMass

Binomial Variable and Hypothesis Testing

Using the accompanying probability distribution, find the following values
X P(x)
1 .25
2 .27
3 .05
4 .43

a) Mean
b) Standard Deviation

Assume that the cure rate for a certain drug is 20% and that 15 patients are tested with this drug. Find the following:
a) Mean
b) Standard Deviation
c) P (exactly 4 cures)
d) P (exactly 4 cures)

A snack company distributes chips in bags labeled 6 ounces. The local Bureau of Weights and Measures randomly selects 50 bags of chips and obtains a sample mean of 5.9 ounces. Assuming that the standard deviation is known to be 0.8, test the claim at the .05 significance level that the bags contain less than 6 ounces. Identify the following:

a) The Null Hypothesis
b) Critical Value
c) Test Statistics
d) Your Conclusion regarding the Null Hypothesis
e) Your Statement regarding the claim.

Solution Summary

Calculation of Binomial variable and students t test with Null Hypothesis, Alternative Hypothesis, Significance Level, Critical Value, P value. The interpretation of results is also given.