Calculate the margin of error for a sampling

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Calculate the margin of error for a sampling distribution having a size of 36 for a 90% confidence level. The population standard deviation is known to be 12. 3.624% 3.290% 3.920% 10%
Correct What should a size of a sample be in order to have a margin of error of 4% for a 95%  confidence level from a population with a standard deviation of 35?
287 208 Solution The correct answer is: 295 How many types of internal validity do we have?
4 Which one of the following describes “construct validity”?
Which one of the following describes “content validity”? References the extent to which the items within a survey instrument characterize the concepts being measured for a given behavior Is the demonstrated precision induced by comparing the performance criteria with established criteria An evaluation of the ways that practitioners translate concepts into actual measures It is concerned with how a procedure or measure appears
Solution The correct answer is: References the extent to which the items within a survey instrument characterize the concepts being
measured for a given behavior Which one of the following describes validity?
Which one of the following is a true statement?
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