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Author Question: Which of the following is LEAST useful in studying the relationship between two variables? a. ... (Read 242 times)

Jkov05

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on: Jun 24, 2018
Which of the following is LEAST useful in studying the relationship between two variables?
 a. trendline
  b. stem-and-leaf display
  c. crosstabulation
  d. scatter diagram

Question 2

The average weekly earnings of bus drivers in a city are 950 (that is ) with a standard deviation of 45 (that is ). Assume that we select a random sample of 81 bus drivers.
 a. Compute the standard error of the mean.
  b. What is the probability that the sample mean will be greater than 960?
  c. If the population of bus drivers consisted of 400 drivers, what would be the standard error of the mean?


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jjorrostieta

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

b

Answer to Question 2

a. 5
b. 0.0228
c. 4.47


Jkov05

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Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

at

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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