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Author Question: Reaction time is measured in a driving simulator for a random sample of 16 year-old boys (n = 12, = ... (Read 88 times)

mia

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on: Jul 24, 2018
Reaction time is measured in a driving simulator for a random sample of 16 year-old boys (n = 12, = 4.5, s = 1.1) and a random sample of 24 year-old young men (n = 9, = 2.9, s = 1.3). Calculate a 99 pooled confidence interval for the difference in mean reaction time (16 year-olds  24 year-olds).
 a. (0.48, 2.72)
  b. (0.51, 2.70)
  c. (0.07, 3.13)
  d. None of the above

Question 2

Which of the following statements best describes the relationship between a parameter and a statistic?
 a. A parameter has a sampling distribution with the statistic as its mean.
  b. A parameter has a sampling distribution that can be used to determine what values the statistic is likely to have in repeated samples.
  c. A parameter is used to estimate a statistic.
  d. A statistic is used to estimate a parameter.


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vickyvicksss

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

D

Answer to Question 2

D


mia

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Reply 2 on: Jul 24, 2018
Excellent

mohan

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Reply 3 on: Yesterday
Wow, this really help

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