In computing descriptive statistics for grouped data, the _____ ...

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In computing descriptive statistics for grouped data, the _____ are used to approximate the data values in each class.
 a. class lower limits
  b. class upper limits
  c. class midpoints
  d. class ranges

Question 2

There are 500 employees in a firm, 45 are female. A sample of 60 employees is selected randomly.
 a. Determine the standard error of the proportion.
  b. What is the probability that the sample proportion (proportion of females) is between 0.40 and 0.55?

[Rilsmarie951]

Answer to Question 1

c

Answer to Question 2

a. 0.0603
b. 0.7482

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[Rilsmarie951]

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