Exam 11: One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

If the null hypothesis is inside the confidence interval,then the decision was likely to ________ using hypothesis testing.

In a sample of 30 participants,a researcher estimates the 95% CI for a sample with a mean of = 0.7 and an estimated standard error for the difference ( )of 0.2.What is the confidence interval at this level of confidence?

The estimation formula for the two-independent sample t is .

A matched-pairs design is one example of a situation in which it is appropriate to use the estimation formula for the related samples t.

Which of the following is a characteristic of confidence intervals?

Confidence intervals can be interpreted in terms of the effect size.

A researcher estimates the 95% CI for a sample with a mean of M = 3.26 and a standard error ( )of 0.91.What is the upper confidence limit for this interval?

A researcher reduces her level of confidence from 99% to 90%.What will happen to the precision of her estimate?

Two types of estimation are point estimation and interval estimation.

A point estimate is typically reported with an interval estimate.Why?

A researcher estimates the 95% CI for a sample with a mean of M = 9.0 and a standard error ( )of 1.03.What is the confidence interval at this level of confidence?

The confidence interval for samples selected from a population with an unknown variance is computed using critical values from the t table.This is true for which of the following types of samples?

The least certain,but most precise,estimate is a point estimate.

A researcher estimates the 90% CI for a sample with a mean of M = 8.9 and a standard error ( )of 2.1.What is the confidence interval at this level of confidence?

If the value stated by a null hypothesis is ________ the confidence interval,then the decision would likely be to reject the null hypothesis.

To estimate the population mean for the two-independent sample t,the sample size must be known.

In a sample of 18 participants,a researcher estimates the 80% CI for a sample with a mean of = 8.8 and an estimated standard error for the difference ( )of 1.8.What is the upper confidence limit for this interval?

As the standard error increases,the precision of an estimate also increases.

A researcher reports with 90% confidence that 31% to 37% of Americans believe in ghosts.What is the point estimate for this interval?

If the value stated by a null hypothesis is ________ the confidence interval,then the decision would have likely been to retain the null hypothesis.