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Explain what you could do to reverse the trend of competitive exclusion by humans so that we do not exhaust the limited resources of the Earth
The lifetime of a disk drive head is normally distributed with a population mean of 1000 hours and a standard deviation of 120 hours. Determine the probability that the lifetime for 9 disk drives will exceed 940 hours.
What is the probability that 6 or more claims are made by males under 25? (C) What is the expected number of claims made by males under 25? What is the standard deviation of the distribution?
Determine the probability that between 5 and 10 minutes will pass between successive occurrences.
Distribution showing the advertising expenditures for 60 manufacturing companies located in the Southwest. Estimate the mean and the standard deviation of advertising expense.
What control limits should be applied to his sample?
Heights are sampled of kids from three schools. Using a 0.05 significance level, if when looking at ANOVA results, your p-value is 0.04, what can you say about your sample data? no minimum word count.
An EMT Service keeps records of emergency calls. A study of 150 five-minute time intervals resulted in the distribution of number of calls as follows.
Explain a Type I error for this situation. Explain a Type II error for this situation.
the sampling distribution of the sample mean. use the central limit theorem to find the approximate probability that the mean number of flaws exceeds 1.8 per square yard.
The following table contains t0 new sub- oups of thickness data. Plot this data on the control charts from (a) based on the new subgroup size. Is the process in statistical control?
Without constructing the 98% confidence interval for the rate of effectiveness, would you expect the interval to be longer or shorter compared to the 95% confidence interval? Why?
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenien..
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