Question: A random sample of five observations, for two variables X and Y, has been collected.The values for the data X are:4,6,7,9,12andthe values for Y are:9,

A random sample of five observations, for two variables X and Y, has been collected.The values for the data X are:4,6,7,9,12andthe values for Y are:9, 7,5,4,2

The sample standard devision of random variable X is (to two decimal places):

a.3.05

b.7.60

c.37.20

d.9.30

e.1.58

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