From a population that is normally distributed with an unknown standard deviation, a sample of 25 elements is selected. For the interval estimation of , the proper distribution to use is the _____.
a. standard normal distribution
b. z distribution
c. t distribution with 26 degrees of freedom
d. t distribution with 24 degrees of freedom
Question 2
Excel's NORM.DIST function can be used to compute _____.
a. cumulative probabilities for a standard normal z value
b. the standard normal z value given a cumulative probability
c. cumulative probabilities for a normally distributed x value
d. the normally distributed x value given a cumulative probability
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standard reduction potential (Eo), the greater the tendency of the oxidized form of a redox couple
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(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur