In a five-number summary, which of the following is NOT used for data summarization?
a. smallest value
b. largest value
c. median
d. mean
Question 2
From a population that is not normally distributed and whose standard deviation is not known, a sample of 50 items is selected to develop an interval estimate for . Which of the following statements is true?
a. The standard normal distribution can be used.
b. The t distribution with 50 degrees of freedom must be used.
c. The t distribution with 49 degrees of freedom must be used.
d. The sample size must be increased in order to develop an interval estimate.
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data