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Consider the following pairs of measurements:
x
5
8
3
4
9
y
6.2
3.4
7.5
8.1
3.2
a. Construct a scatter diagram for the data.
b. Use the method of least squares to model the relationship between x and y.
c. Calculate SSE, s2, and s.
d. What percentage of the observed y-values falls within 2s of the values of Predicted by the least squares model?
An old saying in golf is "you drive for show and you putt for dough." The point is that good putting is more important than long driving for shooting low scores and hence winning money.
For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992
Analysis of data sets assignment
We want to know if his support has decreased. In computing a test of hypothesis with , what is the estimate of the overall proportion?
Basic Statistics problem
Prepare a power curve for this decision rule
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
Assume that the number of left-handers is a binomial random variable. (Refer to the formula for mean and standard deviation for binomial prob. Distribution)
A company wants to know if minorities are more likely to be in certain job categories than others. Their data base codes employees 1 for clerical, 2 for custodial, and 3 for manager. A logistic equation was fit to the data with SPSS.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
where the deviations εi are assumed to be independent and Normally distributed with mean 0 and standard deviation σ. This model was fit to the data using the method of least squares. The following results were obtained from statistical software.
Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?
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