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A government agency is putting a large projector out for low bid. Bids are expected from 10 different contractors and will have a normal distribution with a mean of $3.5 mil and a standard deviation of $250,000. Devise and implement a sampling experiment for estimating the distribution of the minimum bid and expected value of the minimum bid.
What is the probability that the mean duration of these patients pregnancies will be less than 258 days?
compute a qq plot against a normal distribution with a mean of 5 and standard deviation of 1 and test for the goodness
for each of the following state the test statistic you would use for a hypothesis testz t f chi squaredx2 or unknown.a
If a sample of 25 workers found that the average work week is 48 hours, conduct a hypothesis test to determine if there is significant evidence that the length of the average work week has increased? Use alpha=.05
heights of men on a baseball team have a bell shaped distribution with a mean of 183 cm and a standard deviation of 5
Are the following workers more likely to experience short-term or long-term unemployment? Explain.
a consumer group rated 12 manufactured products imported from a single source on a scale of 1 to 10. the data are shown
in a survey of 2000 adults 50 years and older of whom 80 were retired and 20 were pre-retired the following question
The scatterplot shows the relationship between economic status measured as a percentage of children in a neighborhood receiving reduced-fee lunch at school and the percentage of bike riders in the neighborhood wearing helmets.
The standard deviation of the overall process is known to be 0.17 ounces. What is the upper control limit of 3 standard deviations?
What model might you suggest to model the number of purchases per minute? What is the probability that in any one minute at least one purchase is made? What is the probability that no one makes a purchase in the next 2 minutes?
Suppose distinct values are written on each of three cards, which are then randomly given the designations A, B, and C . The values on cards A and B are then compared. What is the probability that the smaller of these values is also smaller than t..
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