Confidence Intervals
Confidence Intervals 2
Misc.
Experiments and Sampling
Tests of Significance
100
The change in the width of a confidence interval when the sample size is increased
What is decreased
100
With 90% confidence, the maximum amount that the statistic differs from the parameter for the middle 90% of all possible statistics.
What is margin of error.
100
A list of the possible values of if H0: μ = μ0 is true.
What is sampling distribution of x(bar) centered at μ0.
100
1. The grouping of experimental units according to some similar characteristic where the random allocation is carried out separately within each group.
What is blocking.
100
1. The hypothesis that the researcher wants to prove or verify.
What is alternative hypothesis.
200
The change in the width of a confidence interval when the level of confidence is increased
What is increased
200
4. Its purpose is to give a range of plausible values for the population parameter.
What is confidence interval.
200
2. The biggest value that P-value could be.
What is one.
200
2. The condition eliminated by randomly allocating individuals to treatments.
What is Bias
200
2. The hypothesis of no change or no difference.
What is null hypothesis.
300
What we use to find out the margin of error for estimating μ with a confidence interval.
What is sampling distribution of x(bar).
300
The name for how often the confidence interval estimation procedure produces 98% confidence intervals that contain the value of the parameter being estimated.
What is level of confidence or 98%.
300
3. The probability that null hypothesis is true.
What is zero or one. Many students thing that this is a statement for P-value, but that is a misconception.
300
3. Results of a study that differ too much from what we expect due to just randomization to attribute to chance.
What is statistically significant.
300
3. Fill in the blank: Hypotheses are always statements about ____________.
What is parameters or parameter values.
400
Fill in the blank: If x(bar) is within margin of error of μ, then μ will be within _______ of x(bar) .
What is margin of error.
400
When the level of confidence is determined in a statistical problem solving procedure.
What is in the planning stage.
400
4. More than one statistical analysis performed on a data set.
What is multiple analyses.
400
4. The condition of having more than one individual in each treatment combination.
What is replication
400
4. The conclusion you should make when P-value is less than α.
What is believe or conclude alternative hypothesis is correct.
500
The probability that a computed confidence interval contains the value of the parameter it estimates.
What is zero or one.
500
The effect of increasing desired margin of error on the required sample size.
What is decreasing required sample size.
500
5. A measure of the proportion of times an outcome occurs in the long run that gives us an indication of the likelihood of the outcome.
What is probability of an outcome.
500
5. Fill in the blanks: The advantage of _______________ over _____________ is to remove variation associated with the blocking variable from experimental error.
What is “randomized block experiment” over “completely randomized experiment”.
500
5. The conclusion you should make when P-value is greater than α.
What is Insufficient evidence to conclude alternative hypothesis is correct.