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A box contains ten ticket, four marked with a positive number and six with a negative number. all the numbers are between -10 and 10. one thousand draws will be made at random with replacement from the box. you are asked to estimate the chance that the sum will be positive.
a) can you do it on the basis of the information already given?b) can you do it if you are also told the average and SD of the numbers in the box, but are not told the numbers themselves?
An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of 6.0 emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution.
In a standard normal dist. what is the prob. of getting a value less than 1.63? How about between 1.13 and 1.86? How about greater than .58?
Of the adults in Jefferson County, 10% have had CPR training
For given population of high school seniors, the schoolastic aptitude test (SAT) in mathemathics has mean score of 500 with the standard deviation of 100.
How could the Central Limit Theorem apply in making a business decision? Try to provide an example from your current or future career.
Determine how large a sample should be taken to be 90% confident that the sample mean is within 0.12 ounces of the true mean weight of our bakery's loaves.
If a remote's maximum range is 10 feet, what percentage of the time will users attempts to operate the remote outside of its operating limit?
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?
Find the area under the normal distribution curve to the right of z = -1.03.
In how many different ways can 5 songs be arranged if a particular song must be the first on the EP?
The hypotheses for this scenario are as follows: Null Hypothesis: μ ≤ 21.61, Alternative Hypothesis: μ > 21.61. You perform a one sample mean hypothesis test on a random sample of data and observe a p-value of 0.0095. What is the appropriate concl..
In order for Samuel's average calorie intake to equal a daily average of 2200 calories, how many calories of food must he consume on Thursday?
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