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Author Question: Summary statistics are given for independent simple random samples from two populations. Preliminary ... (Read 84 times)

NClaborn

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Summary statistics are given for independent simple random samples from two populations. Preliminary data analyses indicate that the variable under consideration is normally distributed on each population. Decide whether use of the pooled t-test and pooled t-interval procedure is reasonable.  Explain your answer.

1 = 143.9, s1 = 13.2, n1 = 7, 2 = 212.9, s2 = 43.7, n2 = 17
◦ Reasonable; the sample standard deviations suggest that the two population standard deviations differ, however since the sample sizes are roughly equal, it is reasonable to use the pooled t-test.
◦ Reasonable; the sample standard deviations suggest that the two population standard deviations are equal.
◦ Not reasonable; the sample standard deviations suggest that the two population standard deviations are equal, however since the sample sizes are not roughly equal, it is not reasonable to use the pooled t-test.
◦ Not reasonable; the sample standard deviations suggest that the two population standard deviations differ and the sample sizes are not roughly equal.


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Marked as best answer by NClaborn on Apr 7, 2020

Cnarkel

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NClaborn

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Reply 2 on: Apr 7, 2020
Excellent


duy1981999

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Reply 3 on: Yesterday
Wow, this really help

 

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