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Determine whether the given value is a statistic or parameter. in a study of all 1900 students at a college, it is found that 25% own a computer.
Use Excel and determine the number of each type of person that will be needed to complete the job within the allotted time and at minimum cost.
Bruce Kuhlman, owner of Kuhlman Farms, wishes to use brand of fertilizer which will produce maximum yield per acre of wheat. Mr. Kuhlman can select from four different commercial brands. Write down the hypotheses?
Use a one-tailed hypothesis test with an alpha level of .01 to demonstrate. Calculate the estimated r squared, the percentage of variance accounted for, to measure the size of this effect.
The following table shows SAT scores (on the old SAT with only two sections) for a sample of students. Give the equation of the least squares regression equation.
What is the probability that a randomly selected fertilized egg hatches in less than 19 days? (Round to four decimal places as needed).
A researcher has a series of Likert-scaled items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumption
What is the maximum likelihood estimate of μ? What is an approximate standard error of the maximum likelihood estimate?
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
What is the probability that 10 or more were male? What is the probability that 10 or more were female? What is the probability that fewer than 7 were female?
What are the differences between a two sample t-test and ANOVA hypothesis testing? What is an example of a research idea that would need to be analyzed using an ANOVA?
Assume company uses (100, 5) sampling plan to find out whether batch of 100,000 chips is acceptable. a) Compute the probability of rejecting a batch which has 3% defectives?
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