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Question: Imagine two scatterplots, where in each scatterplot the points are clustered around a line having slope 0.3. If for the first scatterplot r = 0.8, does this mean that points are more tightly clustered around the line versus the other scatterplot where r = 0.6?
Explain how one extreme score influences mean and standard deviation.
A production line manager, J, is trying to design a manufacturing line, using the machines that her company already has. Based on the historical records
To be from the same population? You may assume the that follows a normal distribution. values are: 2.13 1.31 1.91 1.92 1.77 1.64 2.29 1.99 2.33 2.49 2.22
What is the value of Standard Deviation of the Sampling Distribution for P-chart?
In the belief that Statistics is too hard, a student claims that the mean score on a final exam is less then 70. 15 scores will be chosen at random to test this claim.
a manufacturer of light bulbs advertises that on average its long-life bulb will last more than 5000 hours. to test the
Exercise on Inventory Pricing
Suppose that we roll a pair of balanced dice and X is the number of dice that come up 1, and Y is the number of dice that come up 4, 5, or 6. (a) Draw a diagram like that of Figure 1 showing the values of X and Y associated with each of the 36 equ..
compute the SST, SSE, and SSR
If n = 10 observations are randomly sampled from a distribution with mean µ = 9 and variance σ 2 = 8, what is the mean and variance of the sample mean?
Assuming normality of distribution of yield rates, if senior management has set a goal of 9% for yield, what is the lower capability index? In what proportion of the time will the goal be met?
Which sessions, morning or afternoon, had more stable or uniform attendance over three-day period? Describe by using the suitable calculation for each data set and compare two calculations .
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