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What is the confidence level? A sample of 45 eggs yields a mean of 1.37 ounces. Assume that the standard deviation is 0.53 ounces what is the margin of error at the 95% confidence level.
What percentage of personal checking account customers carry average daily balances in excess of $800? What percentage of the banks customers carries average daily balances below of $200?
A survey of 600 non-fatal accidents showed that 111 involved the use of a cell phone. Find a point estimate for p, the population proportion of accidents that involved the use of a cell phone.
For the experiment above, let X denote the number of hearts that are drawn. For this random variable, find its expected value and standard deviation.
What is the smallest level of significance at which you could reject the null in favor of the alternative hypothesis?
Use the correct formula to find the probability that, out of 45 houses, exactly 4 of the houses will be burglarized. Show your calculations or explain how you found the probability.
Three are selected, at random, without replacement from the batch. What is the probability that the third is not defective given that one of the previous two are defective?
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
What is the probability that all 3 would iPods from best buy? Or at least one would have iPod from best buy?
Seven employees were included from Area A, 9 from Area B and 12 from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level?
Solve different inventory control problems using an appropriate OR method.
The so-called "Gambler's Fallacy" makes the mistake of not recognizing:
A particular bulb is turned on once each evening for an average of 10 hr. If it is desired to have a reliability of 90 percent, what is its design life in days?
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