Which of the following is true about a 95% confidence interval for the mean of a given sample:
a. 95 out of 100 sample means will fall within the limits of the confidence
interval.
b. There is a 95% chance that the population mean will fall within the limits of
the confidence interval.
c. 95 out of 100 confidence intervals will contain the population mean.
d. There is a .05 probability that the population mean falls within the limits of
the confidence interval.
c. 95 out of 100 confidence intervals will contain the population mean.
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One characteristic of government work is that:
a) its employees are free of bureaucracy. b) changes occur more frequently. c) pay schedules are open and published to the public. d) it requires less skill than work in the private sector.
Jacob Kounin’s most important contribution to discipline had to do with:
a) sane messages. b) lesson management. c) roadblocks to communication. d) student needs.
Educators should advocate for systems change to ensure that that individualized discrete services, rather than integrated services, are provided to families and students
Indicate whether the statement is true or false.
Sarah calculates a value of –7.20 for the variance (s2) for a set of data. This necessarily implies ______.
a. she needs to check her calculations b. the mean is less than the standard deviation c. the sum of the negative deviations from the mean are greater than the sum of the positive deviations d. the distribution of scores is negatively skewed