What is the value of zstat
In a random sample of 100 items, 17 are defective. If the Null hypothesis is that 22% of the items in the population are defective, what is the value of Zstat?
Zstat= (round to two decimal places)
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Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.897 and the equation of the regression line isy= 1.58 + 1x, where x represents the IQ score of the twin born first.
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