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If the population standard deviation for the average loss was 16 tons per acre, determine the margin of error for estimating the mean loss per acre for a confidence level of 95% for sample sizes of farmers ranging from 289, 324 and 361. What would be your recommendation to the local Farm Bureau for estimating the average loss of production per acre, given the data you have at hand?
Suppose an airport scanning device has 98% accuracy in detecting certain kinds of metal objects (98% of people carrying these objects are correctly identified as carriers and 98% of people not carrying them are correctly identified as non-carriers..
The mean of a normal probability distribution is 60; the standard deviation is 5.
From a previous study, the standard deviation of the ages is known to be 3 years.
Candies manufactured by Cherrie Chocolate Candies Co, are supposed to weigh at least 2.00 ounces. A sample of 100 candies yields the following results.
Determine the optimum mix of products in terms of maximizing contributions to profits for the next period. Show all work.
Explain the difference between independent samples and dependent samples. Classify the following as independent or dependent samples:
A random sample of 85 group leaders and supervisors revealed that they worked an average of 6.5 years before being promoted. The population standard deviation was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval for ..
When would you use hypothesis testing and when would you use confidence intervals?
Construct a grouped frequency distribution using six classes.
The researcher also gathers data on age and major to see if there is any connection between these varibales and frequency of sexual harassment.
What IQ score should one have in order to be eligible for Mensa?
Select the variable team salary and find the mean, median, and the standard deviation
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