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A shipment of 150 television sets contains three defective units. In how many ways can a vending company buy three of these units and receive (a) no defective units, (b) one defective unit, and (c) at least two good units?
Describe the basic characteristics of a normal distribution and the normal curve. What are z scores and how are they used in relation to distributions and raw scores?
A sample of waterfall heights in Hawaii show that the average height is 261.5 feet with a standard deviation of 13.76 feet.
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
How could your answer to part (A) change if you knew returns followed a skewed distribution instead of a normal distribution? Explain.
Auto pistons at Yongpin Zhou's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled. Construct the 3-sigma x-chart and the 3-sigma R-shart for this dimension, using the data observed in ..
Do the above values appear to be in statistical control, justify your answer?
Find the probability that their mean energy consumption level for September is greater than 1075 kWh.
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
It is reported in USA Today that the average flight cost nationwide is $342.59. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $342.59. What are the appropriate hypoth..
The city of Laguna Beach operates two public parking lots. The one on Ocean drive can accommodate upto 125 cars and the one on Rio Rancho can accommodate upto 130 cars.
Calculate the sample statistic and standard error you will use to create the test statistic.
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