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, s
1 = 13.2, n
1 = 7,
2 = 212.9, s
2 = 43.7, n
2 = 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.
Best Statistics Question
Simple amplification of 1kb DNA fragments by polymerase chain reaction.
Reaction coordinate diagram for a simple enzyme catalyzed reaction
How to calculate simple interest (Part 4; P = I/rt)
Simple Structure of H I V
Summary of Functions of Principal Parts of the Brain