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What are the differences between probability distribution functions and probability density functions? Why do we care?
Which of the following is true about a 95% confidence interval of the mean of a given sample:
To test there is significant difference among the mean of income using ANOVA. A developer of real estate is considering investing in a shopping mall on the outskirts of Atlanta, Georgia.
In exercise identify (a) sample and (b) population. Also, find whether sample is likely to be representative of population.
You're a risk manager of ABC company and you are reevaulating your insurance contract. Your insurer has informed you that the expected value of frequency per month for ABC is 2.43.
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
To find weighted aggregate price index using Laspeyres and Paasche method.
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news ..
Using an appropriate statistical test determine if there is a significant association between gender and satisfaction with the new initiative.
Determine the area under the standard normal curve that lies: (a) to the left of Z = -2.31 (b) to the right of Z = -1.47 (c) between Z = -2.31 and Z = -1.47 (d) between Z = 1.47 and Z = 2.31
According to Advertising Age, average base salary for women working as copywriters in advertising firms is higher than average base salary for men. The average base salary for women is $67,000 and the average base salary for men is $65,500 (Workin..
Problem based on combinatory - how many different license plates are possible?
Which of the following can be treated as binomial experiment? (a) Surveying 1200 registered voters to determine their preferences for the next president?
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