Assumptions behind Inference Testing

Which of the following is not an assumption behind the one population mean z-test?

• Simple random samples

• 𝜎 is known

• Approximately normal distribution or n >30

• Approximately normal distribution or n <30

Which of the following is not an assumption behind the one population mean t-test?

• Simple random samples

• 𝜎 is known

• 𝜎 is not known

• Approximately normal distribution or n <30

Which of the following are assumptions behind the one population proportion z-test? Check all that apply.

• Voluntary Response sample

• Fixed number of trials.

• Fixed Probability.

• Dependent Events.

• 𝑛𝑝≥5, 𝑛(1−𝑝)≥5

The assumptions are:

1) Sample data consists of measures taken before and after treatment is imposed.

2) Sample comes from a population that is normally distributed.

3)  Both samples are simple random.

4)  sigma is unknown

The method of inference used is most likely a:

• One-way Chi-square

• Linear Regression t-interval

• Matched Pairs t-interval

• Independent Samples t-test

Tags

CCSS.HSS.ID.A.4

Both variables are reasonably normally distributed, the relationship between them is linear, the range of both variables is appropriate to the research question. These are the assumptions for which hypothesis test?

• Linear regression t-test

• Two population means - independent samples

• Two population proportions

• Two population means - Matched Pairs

• None of these

Which of the following is not an assumption behind the one-way chi-square

test?

• Simple random samples

• Testing for homogeneity

• Approximately normal distribution

• Testing for independence

• Testing for goodness of fit

Which of the following is not an assumption behind the two-way chi-square

test?

• Simple random samples

• Testing for homogeneity

• Approximately normal distribution

• Testing for independence

• Testing for goodness of fit

Which of the following are assumptions behind the two population proportion z-test? Check all that apply.

• Both samples are simple random

• Fixed number of trials

• Fixed Probability

• Independent Events

• 𝑛𝑝≥5, 𝑛(1−𝑝)≥5

Which of the following is not an assumption behind the two population mean t-test with independent samples?

• Both samples are simple random

• Always a right tailed test

• 𝜎 values are not known

• Approximately normal distributions or each n < 30

Which of the following is an assumption behind the one population mean t-interval?

• Cluster Sample

• 𝜎 is known

• Distribution is skewed to the right

• Approximately normal distribution or n <30

Tags

CCSS.HSS.IC.B.4