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Approximately 25% of tourist going to Atlantic City to GAMBLE spend more than $500. The Atlantic city Chamber of Commerce wants to update this percentage. For the new study, the estimate should be within 1% of the population proportion, with a 90% confidence level. what is the necessary sample size
Car A is known to have a maximum deceleration of 9.35 m/s2. How fast must car A have been going before its brakes were applied? Answer 97.5 km/h (27.1 m/s).
A box of 200 bolts of it known that 2% of such bolts are expected to be defective.(you may take the distribution to be poission; e-4=0.0183).
The company investigating the golf balls is not satisfied with the limited analysis that it has done. The managers have collected a good deal of data, but they are not sure how to look at them and interpret the output.
question 1. select any two qualitative data of your survey. from your qualitative data carry out at least two
What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis?
What fraction of the company's product is good? What percentage is blemished? If an unit of product is selected at random and found to be blemished, what is the probability that it was produced on machine B?
Explain what is meant by subjective probability. Research the Internet, and provide a business-related example in which subjective probability assessment would likely be used (be sure to cite your sources).
Of the students who scored around 50 on the midterm, about what percentage were in the top 25% of the class on the final?
What do confidence intervals represent? What is the most controllable method of increasing the precision of or narrowing the confidence interval? What percentage of times will the mean, or population proportion, not be found within the confidence ..
A concessionaire for the local ballpark has made a table of conditional values for the different alternatives also states of nature
Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
A random sample of 56 fluorescent light bubs has a mean life of 645 hours with a standard deviation of 31 hours.
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