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A local unemployment office keeps track of the number of new claims filed each day. Based on data collected, it determines that the expected number of new claims filed per day is 2.4 with a standard deviation of 0.8688. Suppose that the office is open five days per week. What is the expected number of new claims filed per week at this office?
a. 6
b. 8
c. 10
d. 5
e. 12
Stores A, B, and C, have 50, 75, and 100 employees and respectively 50%, 60%, and 70% if these employees are women. Resignations are equally likely among all employees regardless of sex. One employee resigns and she is a woman. What is the probabi..
Suppose 31% offer both retirement plans and life insurance as benefits. If a small company is randomly selected, determine the following probabilties:
30 students are female what would her confidence interval be if she requires the confidence level of 80%? Determine the point estimate (p) for percentage of engineering students that are female?
Chocolate bars produced by a certain machine are labeled with 8 oz. The distribution of the actual weights of these chocolate bars is Normal with a mean of 8.1 oz and a standard deviation of 0.1 oz. What proportion of chocolate bars weighs less th..
If an auction house is selling products to risk neutral buyers, which of the types of auction would you recommend? If you are a potential buyer, what might your strategy be? Support your answers using economic analysis learned in this course.
1.colleges conduct student evaluations of instruction to determine if there are patterns of either excellence or the
What is the standard error of the difference between the means?
1. the correlation between two variables is 0.8 for a sample of 10 observations. we wish to show there is a positive
In a survey of 8000 woman, 5431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of woman who change their nail polish once a week. A 99% confidence interval for the population is??
New soft drink is being market tested. A sample of 400 individuals participated in the taste test and 100 indicated that they like the taste. Set up the null and the alternative hypotheses.
How is the MLE and the Wald statistic distributed? For confidence intervals and hypothesis tests. How is the likelihood ratio statistic distributed?
The probability distribution of a random variable X is shown below, where X represents the amount of money (in $1,000s) gained or lost in a particular game of Blackjack.
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