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4. The number of inaccurate gauges in a group of four is a binomial random variable s. a) What is the sample space of x (i.e., what values can s take on)? b) If on average 1 of 4 gauges tends to fail, obtain the probabilities for having one and two inaccurate gauges, respectively. c) Obtain the probability for having two or less (p 21 inaccurate gauges. d) Graph the probability distribution of x. Is the distribution symmetrical or skewed? e) What is the average and standard deviation of x?
Explain when a z-test would be appropriate over a t-test - What are some experiments for which you might want a lower alpha level
Convariance matrix
An independent-measures study produces t(21)=3.00, p
Each student in a sample of 10 was asked for the distance and the time required to commute to college yesterday. The data collected are shown in the table.
Produce a short report to update your manager on both the method and results of your analysis and the introduction od 'Six Sigma'.
Calculate the ANOVA table for the model, which you have determined. What is the estimate of the variance in the electric power measurement?
Use a regression model with dummy variables as follows to develop an equation to account for seasonal effects in the data. Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; Qtr3 = 1 if Quarter 3, 0 otherwise.
Suppose you estimate the mean length of all popular songs to be 182 seconds. Then, you use a random sample of 40 songs from your iPod to construct a confidence interval. The confidence interval you construct is (182.2, 226.2). What can you conclude a..
Interpret the coefficients - what does the regression line tell you about the heights of sons of tall fathers - what is the standard error of estimate? Interpret its value.
1)A company that makes traffic signal lights buys switches from a supplier. Out of each shipment of 1000 switches, the company will take a random sample of 10 switches. The company has a policy of rejecting a lot if they find any defective switches i..
The franchise has 6 hours of labor available and has contracted to get 30 lbs. of sausage and 30 lbs. of ham. The manager also plans on purchasing 16 lbs. of flour. Profit on a sausage biscuit is $.60 and $.50 on a ham biscuit. Create a model to help..
The general population one woman in ten will develope breast cancer research has shown that 1 woman in 600 carries a mutation of the brca gene seven out of 10 woman with this mutation develop breast cancer. he probability that a selected woman will..
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