Questions from Essentials of Statistics

Q: True or false: A critical value is considered part of the

True or false: A critical value is considered part of the rejection region.

Q: We have presented some quantitative data sets and specified a grouping method

We have presented some quantitative data sets and specified a grouping method for practicing the concepts. For each data set, a. determine a frequency distribution. b. obtain a relative-frequency dist...

Q: Suppose that you want to conduct a left-tailed hypothesis test

Suppose that you want to conduct a left-tailed hypothesis test at the 5% significance level. How must the critical value be chosen?

Q: Discuss the basic strategy for comparing the means of two populations based

Discuss the basic strategy for comparing the means of two populations based on independent simple random samples.

Q: In the on-line paper “Changes in Lake Ice:

In the on-line paper “Changes in Lake Ice: Ecosystem Response to Global Change” (Teaching Issues and Experiments in Ecology, tiee.ecoed.net, Vol. 3), R. Bohanan et al. questioned whether there is evid...

Q: Find a 90% confidence interval for the difference in the mean

Find a 90% confidence interval for the difference in the mean lengths of time that ice stays on the two lakes. Interpret your result.

Q: For independent samples, the graphs are for the two samples;

For independent samples, the graphs are for the two samples; for a paired sample, the graphs are for the paired differences. The intent is to employ the sample data to perform a hypothesis test to com...

Q: For independent samples, the graphs are for the two samples;

For independent samples, the graphs are for the two samples; for a paired sample, the graphs are for the paired differences. The intent is to employ the sample data to perform a hypothesis test to com...

Q: For independent samples, the graphs are for the two samples;

For independent samples, the graphs are for the two samples; for a paired sample, the graphs are for the paired differences. The intent is to employ the sample data to perform a hypothesis test to com...

Q: For independent samples, the graphs are for the two samples;

For independent samples, the graphs are for the two samples; for a paired sample, the graphs are for the paired differences. The intent is to employ the sample data to perform a hypothesis test to com...