# 2007年特许金融分析师（CFA）一级6组MOCK EXAM培训习题

2007年特许金融分析师（CFA）一级6组MOCK EXAM培训习题

MOCK EXAM 23、MOCK EXAM 24、MOCK EXAM 25、MOCK EXAM 26、MOCK EXAM 27、MOCK EXAM 28，含答案

construct and explain confidence intervals for a normally distributed random variable, and interpret the probability that a normally distributed random variable takes its value inside the constructed confidence interval
Given that sales are normally distributed, the mean is centered in the interval.
Mean = (\$230,000 + \$480,000) / 2 = \$355,000
An interval including 99% of the observations extends three standard deviations either side of the mean. The standard deviation of daily sales = (\$355,000 – \$230,000) / 3 = \$41,667.

24.
calculate and interpret the standard error of the sample mean
The standard error of the sample mean is equal to the population standard deviation divided by the square root of the number of observations in the sample: \$3,200,000 / &#8730;36 = \$533,333.

25.
define, calculate, and interpret 1) a range and mean absolute deviation, and 2) a sample and a population variance and standard deviation
The arithmetic sum of the deviations around the mean will always equal zero.

26.