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The salaries of the employees of a corporation are normally distributed with a mean of $25000 and a standard deviation of $5000. What is the probability that a randomly selected employee will have a starting salary of at least $31ooo?
A local fast-food restaurant has determined that 10% of drive-thru orders are filled incorrectly. Suppose 5 orders are randomly selected. What is the probability that more than one of the orders is filled incorrectly?
What should ING's General Counsel do to minimize ING's expected costs?
The results of a district spelling bee for both girls and boys are normally distributed. the 60 girls have a mean score of 71 with a standard deviation of 6, while the 50 boys have a mean score of 66 points with standard deviation of 5 points.
Arbitron Media Research Inc, conducted a study of the radio listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for men was 35 minutes per day.
A box contains ten fuses of which 3 are defective. Two fuses are selected at random from the box without replacement. What is the probability that exactly one of the fuses selected is defective?
Assume that the distribution is normal. Based on empirical rule how many students scored between 51 and 79.
Which trend model do you think is best to make forecasts for the next 3 years? Why? (e) Use each of the three fitted trend equations to make a numerical forecast for 2007.
I need to find the maximum and minimum surface areas for 2 cubes with a total volume of 432 in^3. No other perameters are specified. I've been able to use common sense to find the max is 432 sq/inches
Speaking to a group of analysts in January 2006, a brokerage firm executive claimed that at least 70% of investors are currently confident of meeting their investment objectives.
How long would it take to estimate the % of entries having errors using a random sample big enough to get a margin of error less than 2%?
Construct a 90% two-sided confidence interval onthe difference between the proportion nonconforming in processes 1 and 2. Based on this confidence interval, can you conclude at a significance level of 10% that the difference is not equal to 10%? W..
In a simple linear regression analysis of 18 data points the following ANOVA table was found.
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