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1. The current values of the stock portfolios for 80 clients of an investment counselor are as listed in data file XR02017. Use your computer statistical software to generate a frequency distribution and histogram describ- ing this information. Do any of the portfolio values seem to be especially large or small compared to the others?
2. One of the ways to evaluate the ease of navigating a corporate website is to measure how long it takes to reach the link where you can view or download the company's most recent annual report. In randomly selecting and visiting 80 corporate websites, an investor needed an average of 39.9 seconds to reach the point where the company's annual report could be viewed or downloaded. The 80 times are in data file XR02018. Generate a frequency distribution and histogram describing this information. Comment on whether any of the corporate sites seemed to require especially long or short times for the annual report to be found.
Use the given frequency distribution to find the Class width
A random sample of 14 days shows Xbar = $502.95 and s = $64.00. You can assume normality. Using alpha = 4%, is the sampling result significant? Explain.
Use mathematical induction to prove that : 1*2+2*3+3*4+....+n(n+1)(n+2)/3 for all n >_1 and (2) Find d=gcd (721 , 448), find integers s and t with d=721s + 448t, and put the fraction 448/721 in lowest terms.
Simulate both one-and two-teller systems, calculate waiting time, average queue length, and percentage utilization for each system.
Let XA and XB denote, respectively, the number of victories against class A and class B teams. What are the distributions of XA and XB ?
the seats were subjected to a safety stress test in which scores were assigned on a continuous scale of 0 to 10.
tv advertising agencies face growing challenges in reaching audience members because viewing tv programs via digital
george is curious. he has been told that the average body temperature of humans is 98.6 degrees fahrenheit. however he
The plant manager wants to evaluate the capability of a critical cutting operation that he suspects might be the source of the gap problem. The nominal specification for this cutting operation is 25.500 inches.
The cost of an e-commerce website can vary a great deal. A market research team hypothesized that the cost of an average website is $3500.
find the sample size required to estimate the mean age of registered drivers in the united states. assume that we want
1. acme corporation manufactures light bulbs. the ceo claims that an average acme light bulb lasts 300 days. a
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