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A certain airplane has two independent alternators to provide electrical power.
The probability that a given alternator will fail on a 1-hour flight is .02.
What is the probability that
a) both will fail?
b) Neither will fail?
c) One or the other will fail? Show all steps carefully.
Answer all of these questions using R Commander. Include all graphs, outputs from R Commander.
How strong is the evidence against the company's claim? Based on these data, the P -value of the appropriate test
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
Problems on Sampling Variability and Standard Error and Confidence Intervals
The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM
In addition, record the values for the UCL, center line, and LCL. Also, record any points that are out of control. Use a z-value of three.
A permutation resample for a two-sample test
Assume the researcher's rats can be considered an SRS from the population of all laboratory rats. The mean Math SAT score of these students is found to be 560, 80 points higher than the national average.
A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
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