Following are interest rates (annual percentage rates) for a 30-year-fixed-rate mortgage from a sample of lenders in a certain city. it is reasonable to assume that the population is approximately normal. 4.327, 4.461, 4.547, 4.662 , 4.365, 4.526 , 4.842 find the upper bound of the 99% confidence interval for the mean rate.

What is the correct percentage of texas teachers charged with ethics violations each year?

Reliability and validity reliability and validity are two important considerations that must be made with any type of data collection. reliability refers to the ability to consistently produce a given result. in the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways. unfortunately, being consistent in measurement does not necessarily mean that you have measured something correctly. to illustrate this concept, consider a kitchen scale that would be used to measure the weight of cereal that you eat in the morning. if the scale is not properly calibrated, it may consistently under- or overestimate the amount of cereal that’s being measured. while the scale is highly reliable in producing consistent results (e.g., the same amount of cereal poured onto the scale produces the same reading each time), those results are incorrect. this is where validity comes into play. validity refers to the extent to which a given instrument or tool accurately measures what it’s supposed to measure. while any valid measure is by necessity reliable, the reverse is not necessarily true. researchers strive to use instruments that are both highly reliable and valid.

The following are line items from the horizontal analysis of an income statement:increase/ (decrease) increase/ (decrease) 2017 2016 amount percent fees earned $120,000 $100,000 $20,000 20% wages expense 50,000 40,000 10,000 25 supplies expense 2,000 1,700 300 15 which of the items is stated incorrectly? a. fees earned b. supplies expense c. none of these choices are correct. d. wages expense