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1. Choose all probability distributions which are theoretically related to normal probability distribution
2. The 68-95-99.7 rule states that in a normal distribution
3. For a normal distribution the a mean of 179 and standard deviation of 28, what is the Z value for a random value to be 107? (use 2 decimal digits)
What is the minimum sample size needed in order for you to be confident that your estimate is within 5 of ? Use the value for the population standard deviation of scores on this subsection.
How might one know if an error was made in accepting or rejecting the null hypothesis? Do you suppose the nature of the research has an influence on the selection of the significance level? Why or why not?
Marketing and Consumer Behavior A marketing manager obtained random samples of shoppers from three different grocery stores and asked each shopper to name
Assume that the population standard deviation is 52 seconds. Is there any evidence to suggest the advertising campaign has been successful? Use a = 0.01.
The intervals make clear how uncertain we are about the true value of p and how little difference there is between the two sample outcomes.
a 98 confidence interval estimate for a population mean was computed to be 26.4 47.8. determine the mean of the sample
The Warren County Telephone Company claims in its annual report that "the typical customer spends $70 per month on local and long-distance service.
Do these data suggest a statistically significance difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance and computed value of 2.37.
What is meant by the natural variance and natural standard deviation of a sample of observations?
Frequent checks of the unfilled orders follow a Poisson Distribution (discrete frequency distribution) with a mean of 2 orders.
We found several sources of data by doing a Google search on "faculty head count by rank and gender." In addition to discussing the pattern you find, provide the data, the name of the school, and the source of the data.
assume that you must conduct a new poll to determine the percentage of adults who believe that it is morally wrong to
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