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Home Q & A Board Science-Related Homework Help Mathematics
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ujesssss ujesssss
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4 years ago

Question 1.

Use a table of z-scores and percentiles to find the percentage of data items in a normal distribution that lie between:

z = -2 and z = -0.6

▸ 27.43%

▸ 25.15%

▸ 2.28%

▸ 72.57%

Question 2.

The correlation coefficient, r is given for a sample of n data points. Use the column in a correlation significance table to determine whether or not we may conclude that a correlation does exist in the population.

n = 20 r  = 0.5

▸ No, we may not conclude that there is a correlation.

▸ Yes, we may conclude that there is a correlation.
Textbook 
Thinking Mathematically

Thinking Mathematically


Edition: 6th
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BobbyDBobbyD
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this is exactly what I needed
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