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Author Question: Which of the following is a measure of dispersion? a. percentiles b. quartiles c. interquartile ... (Read 74 times)

nramada

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on: Jun 24, 2018
Which of the following is a measure of dispersion?
 a. percentiles
  b. quartiles
  c. interquartile range
  d. All of the answers are correct.

Question 2

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took these 100 customers to check out was 3 minutes. It is known that the standard deviation of the population of checkout times is 1 minute. With a .95 probability, the sample mean will provide a margin of error of
 a. 1.96.
   b. .10.
   c. .196.
   d. 1.64.


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aidanmbrowne

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Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

c


nramada

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Reply 2 on: Jun 24, 2018
Gracias!

rachel

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Reply 3 on: Yesterday
Excellent

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