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Author Question: The large sample z test for 1 - 2 can be used as long as at least one of the two sample sizes, n1 ... (Read 80 times)

cabate

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The large sample z test for 1 - 2 can be used as long as at least one of the two sample sizes, n1 and n2, is greater than or equal to 30.
  1.True
  2.False

Question 2

A survey was conducted on campus to learn about the average time that students spend in volunteer service per week. A random sample of 20 female college students and an independent random sample of 18 male college students were obtained and the number of volunteer hours per week was recorded. A 90 confidence interval for the difference in the population mean number of volunteer hours per week, F  M is given by (0.4, 2.6).
  Based on this interval, does there appear to be a difference in the number of volunteer hours per week between females and males, on average?
  1.Yes, because 0 is not in the interval.
  2.No, because 0 is not in the interval.



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abctaiwan

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Answer to Question 1

2

Answer to Question 2

1




cabate

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


Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

 

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