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Sea Fair Fashions relies on its sales force of 220 to do an initial screening of all new fashions. The company is currently bringing out a new line of swimwear and has invited 40 salepeople to its Orlando home office. As issue of constant concern to the SeaFair sales office is the volume of orders generated by each sales person. Last year, the overall company average was $317,330 with a standard deviation of $45, 285 (Hint: the finite population correction factor, is required).
a) Determine the probability the sample of 40 will have a sales average less than $400,000.
Consider the following news headline, "Cigarette Smokers Make Lower College Grades than Nonsmokers" The news article goes on to say that researchers at a university collected information on rate of cigarette smoking (total number of cigarettes sm..
The American Automobile Association checks the prices of gasoline before many holiday weekends. Listed below are the self-service prices for a sample of 15 retail outlets during the May 2003 Memorial Day weekend in the Detroit
Given following financing project being considered by venture film, determine critical path probability of completion by 17 weeks.
A civil service exam is given to 200 job applicants. In recent years, grades have followed a normal distribution with mean 66.5 and variance 100. The grades of the job applicants are distributed as follows:
The χ 2 statistic from a contingency table with 6 rows and five columns will have:
What is the mean and standard deviation of the number preferring the incumbent and what is the probability that more than 68% will favor the incumbent?
Comparing the experimental and theoretical probabilities, can you say the die used in this experiment is a fair die? Why or why not?
Complete the test at the 5% level of significance.
The point estimate for the difference between the proportions is:
The critical value of F at 95% confidence when there is a sample size of 21 for the sample with the smaller variance, and there is a sample size of 9 for the sample with the larger sample variance is:
The national sporting goods association conducted a survey of persons 7 years of age or older about participation in sports activities the total population in this age group was reported at 248.5 million with 120.9 million male and 127.6 million f..
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
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