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The average height of american women is distributed normally, with a mean of 63.5 inches and a standard deviation of 2.5 inces approximately what percentage of american women are taller than 58.5 inches, but shorter than 68.5?
(a)95(b)50%(c) 84%(d)68%
Neither married nor a college graduate? (answer should be a probability, that is, a number between 0 and 1). Married but not a college graduate? (answer should be a probability, that is, a number between 0 and 1).
Locate the results of a recent survey in a newspaper, magazine, or Internet article. Outline the survey data so that your peers can understand the variables and results, and then identify at least one key formula from this Module that you could us..
An analysis of 1,000 cellular phone calls made from company phones at the offices of Kant, Taekitini, Moore, LLC reveals that the length of these calls is normally distributed, with m = 240 seconds and s = 40 seconds.
Do you think the state has any intention of ever stopping the lottery, given the fact that the state relies on it to bring millions of dollars into its treasury?
In a poll of 150 randomly selected adults 78 said they favored a new proposition. compute a 95% confidence interval for the proportion of all adults in favor of the proposition at the time of the poll.
A random sample of 16 federal inmates is selected. What is the probability that exactly 12 are serving time for drug dealing?
You're a risk manager of ABC company and you are reevaulating your insurance contract. Your insurer has informed you that the expected value of frequency per month for ABC is 2.43.
What is the lowest raw score that a client must have on Anxiety Scale A in order to be admitted into this new group? Also assuming some clinics use Anxiety Scale B and often refer their clients to Mary, what is the cutoff point (lowest raw score) ..
Find a z score for which the area under the standard normal curve from -z to z is 50%. (b) Find the range of scores which will be assigned a grade of C.
To find out the proportion of the population of likely voters who agree the statement. Could we say among appropriate statistical certainty which the proportion of the population of likely voters.
The trend line y = 0.70 + 0.005t was calculated from quarterly data for 1999 -2003, where t = 1 for the first quarter of 1999. The seasonal indexes computed from the trend line for the four quarters of the year 2004 were .85, 1.05, 1.15, and .80, ..
A local grocery store wants to estimate the mean daily number of gallons of milk sold to customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 5.10 gallons.
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