Mathematics, 20.03.2021 20:30 msheehan4737
Which measure describes how much a sample mean varies when different samples are chosen?
A.
sample mean
B.
confidence interval
C.
standard error of the mean
D.
population mean
Answers: 1
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The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.
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Use a calculator to verify that ฯ(x) = 62, ฯ(x2) = 1034, ฯ(y) = 644, ฯ(y2) = 93,438, and ฯ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.
Answers: 3
Which measure describes how much a sample mean varies when different samples are chosen?
A.
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