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Assume adults have IQ scores that are normally distributed with a mean of 105 and a standard dviation 20. Find the probability that a rondomly selected adult has an IQ betwwen 93 and 117.
Assuming no discrimination based on gender, what is the probability of getting 41 or fewer women when 100 new employees are hired?
Given the following data on the number of pints of ice cream sod at a local ice cream store for a 6 period time frame.
A run chart is developed that confirms process stability. The level of significance is chosen to be 0.01. (a) Is there evidence to suggest that the process average differs from the target value?
what will be the standard deviation of the share price if it is assumed that there is a 95% probability that the value will be at least 64?
Suppose that this is a simple random sample of adult residents of Maine.
Explain how much money do these people make each year. Suppose you read in your local newspaper that 45 officials in student services whioch is earned as an average.
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
A fair die is rolled nine times. What is the probability that an odd number (1,3 or 5) will occur less than 3 times?
Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important?
One advantage of the repeated measures ANOVA is that it eliminates "individual differences" as a source of variability. Explain why there are no individual differences in the numerator and in the denominator of the F ratio.
The standard deviations s1 and s2 can be used when Ó1 and Ó2 are unknown and you believe that the underlying distribution is normal. Then, you would use s1 and s2 with the t-test for hypothesis testing.
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information.
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