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Body temperatures for all healthy adults are normally distributed with a mean of ? = 98.2°F and a standard deviation of ?= 0.62°F. Use this fact and Table A-2 or Excel to answer the following questions.
Note that you must sketch a graph for each.
-Suppose one healthy adult is randomly selected. What is the probability that this person will have a body temperature of 98.5°F or higher?
-What is the probability that a randomly selected healthy adult will have a body temperature between 97.0°F and 98.9°F?
-Suppose that we consider temperatures in the lowest 2.5% and the highest 2.5% to be "unusual". Find the temperatures that separate "usual" body temperatures from those that are "unusual".
-Using your answers to #3 above, would any of the body temperatures in our sample be considered "unusual" for a healthy adult? If yes, which ones?
Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required?
Pretests, posttests and threats to internal validity and please discuss all threats to internal validity.
40 cars being sent to local automobile?dealers, 4 are SUVs. What is the probability that if 4 cars arrive at a particular? dealership,
Typically, these children must have IQ scores in the top 5%. What is the minimum score to qualify a child for these programs?
From your own experience either personally or professionally, provide an example of when you have encountered or used relative probability.
Discuss how accurate you believe these results are using information related the regression models.
What would that evaluation be and what is the margin of error?
Find the regression line with all of these states removed from the calculation. Draw this new line on your plot. Was this group of states inuential?
Sixty percent of the families in a certain community own their own car, thirty percent own their own homes, and twenty percent own both their own home and own car. If a family in the community is randomly chosen, what is the probability that they ..
A psychologist is interested in knowing whether adults who were bullied as children differ from the general population
Box A contains 4 defective and 6 non-defective items. Box B contains 3 defective and 7 non-defective items. A box is picked at random and then an item is drawn from it.
What does the result imply about Mendel's claimed proportion of 3/4?
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