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If the average price of a new home is $400,000, find the maximum and minimum prices of the houses a contractor will build to include the middle 65% of the market. Assume a normal distribution and a standard deviation of $40,000.
What is the OR of getting cancer fora late child birth woman compared to an early first birth woman?
Probability using Z-score.Find the probabilities that a random variable Z having a standard normal distribution will take on a value.
If the loss of weight of customers at the end of their first month is normally distributed with a mean of 6.7lbs and a standard deviation of 0.81lbs
Change the frequencies to percentages - is there a group more likely to get high salaries.
Do you benefit by using a cum sum chart rather than a control chart?
For a sample with standard deviation of 10, a score of X = 44 corresponds to z-score of 0.50. Based on this info, determine the sample mean?
The average number of hours of sleep per night that a college freshman gets is 6.50 with a standard deviation of 1.80 hours. If 35 college freshmen are randomly chosen find the probability that they average at least seven hours of sleep per night.
Consider a four digit uniform random number generator; as in each of the 10,000 values 0.0000 through 9999 is equally likely. Find the mean and variance of the values produced by such a random number generator.
Utilizing the 5% level of significance as there was a significant change in cholesterol level. Their total cholesterol levels before also after the diet.
Clark Heter is an industrial engineer at Lyons Products. He would like to conclude whether there are more units produced on the afternoon shift than on the day shift. A sample of 54 day-shift workers showed that the mean number of units produced w..
Increasing the confidence-interval level from .95 to .99
Find out the probbility that exactly five arrive within two days?
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