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Test the given claim by using the traditional method of testing hypothesis.
Coke cans: n=36, mean of values in sample = 12.19 oz., s= 0.11 oz. Test the claim that the mean equals 12 oz. Use a significance level of alpha = 0.02.
The results of a published research study indicated that babies fed on breast milk gained an average of 11 ounces per week; babies fed a powdered instant baby formula gained an average of 2 ounces per week.
A machine has three components working independently. The probability that Component A fails is 0.1, the probability that component B fails is 0.2, and the probability that component C fails is 0.3.
Define what a hypothesis is and discuss the relationship between hypothesis testing and statistics. Discuss what independent and dependent variables are in an experiment, state the relationship between the two and give an example.
Name six virtues and characteristics of problems and hypothesis. Name some tips for identifying and developing formal research problems.
Define the rejection region. State the statistical decision.
When someone buys a ticket for an airline flight, there is a 90% probability that a person will not show up for the flight. Air America books 15 people on a commuter flight that can only seat 13 passengers.
A researcher wished to estimate the number of households with two cars. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 4%.
Modify above problem (Problem 8th) so that each hardware vendor now demands seventy-five (75) units. Any units available from the vendors that are not shipped cost nothing.)
At the 5% significance level, can the station conclude that the mean age of its listeners is not 25 yrs. Formulate and test the appropriate hypotheses. Use the critical value approach.
To test whether there is any association between two variables using Chi-Square test for independence.
The mean number of passengers per cruise is 1,820 and the standard deviation is 120.
What is the probability that a student who has failed the test came from the South District?
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