Suppose there are 310 first-year lawyers in a particular metropolitan area with an average starting salary of 156,000 and a standard deviation of 13,000. What is the standard error of the mean for a random sample of 33 first-year lawyers?
A) 2,142.63
B) 2,263.01
C) 3,145.44
D) 4,512.26
Question 2
Which one of the following statements is not true regarding the characteristics of the Student's t-distribution?
A) It is bell-shaped and symmetrical around the mean of the distribution.
B) The area under the curve is equal to 1.0.
C) The shape of the Student's t-distribution is narrower than the shape of the normal distribution.
D) As the number of degrees of freedom increases, the shape of the Student's t-distribution becomes similar to the normal distribution.
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In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ...