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Question: Suppose that the radios in the 1,000 containers of problem were produced in five different factories, each factory known to have different internal production controls. Each container is marked with a number denoting the factory where the radios were made. Suggest an appropriate sampling method in this case, and discuss its advantages.
Problem: A quality control sampling scheme was carried out by Sony for estimating the percentage of defective radios in a large shipment of 1,000 containers with 100 radios in each container. Twelve containers were chosen at random, and every radio in them was checked. The numbers of defective radios in each of the containers are 8, 10, 4, 3, 11, 6, 9, 10, 2, 7, 6, 12. Give a 95% confidence interval for the proportion of defective radios in the entire shipment.
1. questions based on a distribution of scores with and the standard deviation 6.38. draw a small picture to help
Moving average oscillators are often used to determine when to buy and sell (or sell short) securities. They also can be used to help signal trends in the underlying data.
graphical depiction of data histogram and ogive1. make a grouped frequency distributionusing 35000 - 39999 as the
Market researcher Ally Nathan is studying the relationships among price, type (classical or steel string), and consumer demand for acoustic guitars. She wants to find the relationship between demand and price, controlling for type.
(1) Use Laplace Transforms to solve Differential Equation y'' - 8y' + 20 y = t (e^t) , given that y(0) = 0 , y'(0) = 0
What level of contributions was exceeded by only 20% of the itemized returns in this income group?- What level of contributions was exceeded by 40% of the itemized returns in this income group?
A second sample of 61 has a mean of 100 and a population standard deviation of 8. Conduct a z-test about a difference in sample means using a 0.03 significance level and the following hypotheses.
Record the type of research design used. True lab experiment, quasi-experiment, field experiment, or correlation design.
a coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that
a coin is tossed three times.1. what is the probability that the coin will land heads at least twice?2. what is the
State the null and an alternate statement for the test and Extrinsic variable by Position Type - Identify the significance level, the test statistic, and the critical value and state whether you are rejecting or failing to reject the null hypothesis ..
in a recent study of vietnam veterans researchers found that in a sample of 2101 veterans 777 had been divorced at
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