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Author Question: A first step in testing whether two populations have the same mean value using the t-distribution is ... (Read 79 times)

jho37

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on: Jun 24, 2018
A first step in testing whether two populations have the same mean value using the t-distribution is to use the chi-square distribution to test whether the populations have equal variances.
 
  Indicate whether the statement is true or false

Question 2

Suppose a study estimated the population mean for a variable of interest using a 99 confidence interval.
 
  If the width of the estimated confidence interval (the difference between the upper limit and the lower limit) is 600 and the sample size used in estimating the mean is 1,000, what is the population standard deviation?A) 26711.14
  B) 2451.23
  C) 3684.21
  D) 5125.11


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jackie

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

FALSE

Answer to Question 2

C


jho37

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Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

dawsa925

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Reply 3 on: Yesterday
Wow, this really help

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