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Author Question: When the data have the properties of ordinal data and the interval between observations is expressed ... (Read 58 times)

TVarnum

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on: Aug 1, 2018
When the data have the properties of ordinal data and the interval between observations is expressed in terms of a fixed unit of measure, the variable has which scale of measurement?
 a. nominal
  b. ordinal
  c. interval
  d. ratio

Question 2

Suppose that the amount of time teenagers spend playing computer games per week is normally distributed with a standard deviation of 1.5 hours. A sample of 100 teenagers is selected at random, and the sample mean computed as 6.5 hours. Determine the 95 confidence interval estimate of the population mean if the sample size is changed to 300.


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upturnedfurball

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Reply #1 on: Aug 1, 2018
Answer to Question 1

c

Answer to Question 2

LCL = 6.33 and UCL = 6.67 (hours per week)


TVarnum

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Reply 2 on: Aug 1, 2018
Gracias!

xiazhe

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Reply 3 on: Yesterday
:D TYSM

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