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The average number of field mice per acre in a 5-acre wheat field is estimated to be 12. Find the probability that fewer than 7 field mice are found
(a) On a given acre;
(b) On 2 of the next 3 acres inspected.
What is the characteristic function of N? What is the mean and variance of N? What is the pmf of N? What is the probability that N is an even number?
Suppose you want to test the claim that population mean miu=3.5. Given a sample size of n=34 and a level of significance of alpha=0.01, when should you reject Ho?
The standard deviation of the sample is 2.5 calls. Using the .05 significance level, can we conclude that the mean number of calls per salesperson per week is more than 44?
Xerox Claims their copier is the same speed as Cannon's copier. The average speed of cannon's copier is 27 copies per minute. A test of 49 runs is done on the Xerox copier giving a sample mean X = 26 and a sample standard deviation s = 2.65.
The data was used to make inferences regarding the other students taking the course. Construct a 95% confidence interval estimate. Explain your findings so that your non-quantitative partner will understand them. Their data is below:
Choose the correct answer using sum of squared error (SSE).
Do these measures of central tendency agree? Explain. What could the measures of dispersion tell us about the results of the quiz?
An election poll reported that a candidate has an approval rating of 54% with a margin of error of 4%. Construct a confidence interval for proportion of adults who approve of the candidate.
Standard deviation of $5,000. What is the lowest salary for those individuals with an MBA degree whose starting salary is in the top 10 percent?
A random sample of 64 services is selected. What is the probability that the sample of 64 will have a mean service time greater than 114 minutes.
The sample standard deviation is $2,050. Using this information, calculate the 95% confidence interval (rounded to the nearest $10). Interpret your findings.
State the null hypothesis and the alternative hypothesis and compute the value of the test statistic and what is your decision regarding the null hypothesis?
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