Male drivers between the age of 16 and 20, with a bal of.02 are times more likely to die in a single vehicle crash than a sober driver of the same age.

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.

In a perfectly competitive market, the long-run market supply curve tends to be horizontal or nearly so. what is another way to state this fact? (a) market supply is much more elastic in the long run than the short run. (b) in the long run, average total cost is minimized. (c) in the long run, price equals marginal cost. (d) market supply is much less elastic in the long run than the short run.

Cherokee inc. is a merchandiser that provided the following information: amount number of units sold 20,000 selling price per unit $ 30 variable selling expense per unit $ 4 variable administrative expense per unit $ 2 total fixed selling expense $ 40,000 total fixed administrative expense $ 30,000 beginning merchandise inventory $ 24,000 ending merchandise inventory $ 44,000 merchandise purchases $ 180,000 required: 1. prepare a traditional income statement. 2. prepare a contribution format income statement.