Reference no: EM1390484
This problem has to do with graphical plotting and computation for certain distribution. Please mention a detailed response to the questions listed with appropriate graphical and statistical data representation(s).
NB. The 90 percent confidence interval is for both the mean and for the variance too.
1. The following are the spark plug gaps, in mm, of eight spark plugs in a package (drawn from a normally distributed population): 2.50, 2.52, 2.48, 2.53, 2.47, 2.51, 2.50 and 2.55
Find a 90% percent confidence interval for all spark plug gaps (use chi-square distribution).
2. A six-cylinder, 4000-hp marine diesel engine has six fuel injectors. Because heavy fuel oil is used, the injectors get dirty after approximately 1000 hours. Consequently, pressure adjustment is lost, resulting in poor combustion and possible component failure. Assume that the chance of an injector failing is 1 in 200 after the 1000 hours of operation. Assume that the occurrences of failure of the injectors are independent of each other and that the engine can run if more than three injectors keep operating. What is the probability of the engine failing after 1000 hours of operation (use binomial distribution)?
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Seven spiritual values
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Hypothesis of the population average pulse rate
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Multiple choice questions - cellular and molecular biology
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What was the speed of bullet
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Statistical measurements and graph
: This problem has to do with graphical plotting and computation for certain distribution. Please mention a detailed response to the questions listed with appropriate graphical and statistical data representation(s).
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Understand and predict the possible intercultural encounters
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What are the magnitude and direction of the tension
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What is the magnitude of the torque about his muster
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Estimating a population proportion
: a) Determine the proportion of instances that the duration was less than 240 seconds. Also express the proportion as a percent. (hint: proportion is number of successes divided by total number.)
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