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Researchers published a study in which they considered the incidence among the elderly of various mental health conditions such as dementia, bi polar disorder, obsessive compulsive disorder, delirium and alzheimer's disease. In the U.s. 45% of adults over 65 suffer from one or more of the conditions considered in the study.
Calculate the probability that fewer than 320 out of the n=750 adults over 65 in the study suffer from one or more of the conditions under consideration.
a non profit company concerned with the school dropout rates in a nearby state has designed a tutoring program aimed at
Compute the projected profit for the order quantities suggestedby the management team under three scenarios: worst case in whichsales = 10,000 units, most likely case in which sales = 20,000units.
two friends decide to go to the track and place some bets. one friend remarks that in an upcoming race the number 8
find the following probabilities for a standard normal random variable z. note round your answers to four decimal
The owner of Western Clothing Company has determined that the company must sell 670 pairs of denim jeans each month to break even (i.e., to reach the point where total revenue equals total cost).
audrey an astronomer is searching for extra-solar planets using the technique of relativistic lensing. though there are
A researcher wishes to study the effect of a new drug on blood pressure. Consider and discuss the following questions as you respond:
What is the effect on a confidence interval if one decreases both sample size and the level of confidence?
7% of his eggs are underweight, and that 14% weigh over 72 grams. If a normal model is appropriate, what would the standard deviation of his egg weights be?
An insurance company states that 90% of its claims are settled within 5 weeks. A consumer group selected a random sample of 100 of the company's claims and found 75 of the claims were settled within 5 weeks.
Compute the first quartile the third quartile and the interquartile range.List the five-number summary.Construct a boxplot and describe its shape.
suppose you have a list of salaries of all major league baseball players in 2013. does it make sense to find a 95
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