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A study by the National Golf Foundation reports that the 6.2 million golfers over the age of 50 spent an average of $939 on golf during the previous year. Assuming a normal distribution with a standard deviation of $200, what is the probability that a randomly selected golfer in this age group will have spent:a. more than $1539?
b. between $939 and $1339?
c. less than $1139?
d. between $539 and $1139?
for a continuous random variable x p27 ? x ? 74 0.35 and px gt 74 0.1. calculate the following probabilities. how
Choose any medical scientific study who applied a Bayer Theorem and write down the article information (title, author, location, and date) of the article
Drug is effective on 89% of women and 65% of men. It is known that 66% of the people who take the drug are women. What is the probability that the drug is effective?
As a result of recent campus safety concerns at Capella University, you have been engaged by campus security team leaders to gather and analyze data about on-campus crime rates in schools in the state of Minnesota. Crime data from 181 Minnesota ca..
rate data often follow a lognormal distribution. average power usage db per hour for a particular company is studied
A researcher claims that the average age of people who buy lottery tickets is 70. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 16. At alpha = 0.05 is there enough evidence to reject the researche..
the mean height of adult women is 63.6 inches with a standard deviation of 2.5 inches. forty 40 women were asked their
Using the Internet, the text, or another reliable source such as a newspaper or periodical site, (not a scholastic or school site like Khan Academy and not Wikipedia), research some important data that has been presented in graph or table format.
A study finds, using a logit analysis, that there is a statistically significant 6% increase in the probability that a child will have a measles immunization if they attend an early intervention programme.
The four fan blades have a total mass of 2 kg and moment of inertia lo = 0.18 about an axis passing through the fan's center O. If the fan is subjected to a moment of , where t is in seconds, determine its angular velocity when t= 4s starting from re..
Suppose you used a .01 level of significance. Would that change your decision in terms of the problem in part a? Explain why or why not.
A publisher reports that 74% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage.
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