Questions from Statistics

Q: A random sample of 100 births includes 35 male babies. Is

A random sample of 100 births includes 35 male babies. Is this result significant at the 0.01 level? What is the P-value for this result?

Q: A random sample of 100 births includes 35 male babies. Is

A random sample of 100 births includes 35 male babies. Is this result significant at the 0.05 level? What is the P-value for this result? What would you conclude based on this result? Answer: Yes. Th...

Q: What is a hypothesis in statistics? What do we mean by

What is a hypothesis in statistics? What do we mean by a hypothesis test in statistics?

Q: What is a null hypothesis and an alternative hypothesis, and what

What is a null hypothesis and an alternative hypothesis, and what notation do we use to denote them? How do left-tailed, right-tailed, and two-tailed hypothesis tests differ?

Q: I drew a map on which I scaled the lengths (from

I drew a map on which I scaled the lengths (from east to west) of different counties based on their numbers of family-owned farms, and found that a county with twice as many farms as another ended up...

Q: What are the two possible outcomes of a hypothesis test, and

What are the two possible outcomes of a hypothesis test, and what do they mean? Can such a test have an outcome of accepting the null hypothesis?

Q: Define variable, variables of interest, explanatory variable, and response

Define variable, variables of interest, explanatory variable, and response variable. How are the explanatory and response variables related to each other?

Q: What is a P-value for a hypothesis?

What is a P-value for a hypothesis?

Q: When conducting hypothesis tests, you need to consider a different set

When conducting hypothesis tests, you need to consider a different set of critical values for two-tailed tests than for one-tailed tests.

Q: In testing a claim about a population mean, if the standard

In testing a claim about a population mean, if the standard score for a sample mean is z = 0, then there is not sufficient sample evidence to support the alternative hypothesis.