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Is the Euro fair? Soon after the Euro was introduced as currency in Europe, it was widely reported that someone had spun a Euro coin 250 times and gotten heads 140 times. We wish to test a hypothesis about the fairness of spinning the coin.
a) Estimate the true proportion of heads. Use a 95% confidence interval. Don't forget to check the conditions first.
b) Does your confidence interval provide evidence that the coin is unfair when spun? Explain.
c) What is the significance level of this test? Explain.
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Comment on your statistical findings? Do you agree with your initial statement regarding the preference of an ANOVA over a t-test when examining more than two groups?
The technician has just made an attempt to calibrate the machine. a. What is the probability that the machine is in adjustment?
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A state survey investigates either the proportion of 8percent for employees who commute by car to work is higher than it was five years ago.
At a large commercial bakery, one of the measures used to evaluate employees is number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and the broken co..
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Determine probability that number of boats constructed next month will be between 4 and 7 (both inclusive).
A journal polled its readers to determine the proportion of wives who, if given a second chance, would marry their husband again.
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Compute cumulative probabilities for these numbers in second column. Then create a histogram illustrating data distribution. Using generated Normal probability table, determine probability of Pr(X
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