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In testing the hypothesis, Ho: u> or equal to 31.5 and Ha: u<31.5 , using p-value approach, a p-value of 0.0409 was obtained. If σ = 8.7, find out a sample mean which produced this p-value given that sample of size n = 50 was randomly selected.
Statistics and Probability, Statistics
1. What is the central difficulty involved in obtaining simple random samples from large populations? 2. How does cluster sampling solve the practical problems involved in simple random sampling?
A Scarf Company built a new parking garage in a business district. For a random sample of 100 days, daily fees collected averaged $1,800, with a standard deviation of $500. Construct a 90% confidence interval estimate of ...
Some accounting firms give the client an option to pay a fee when the tax return is completed that guarantees tax advices and support from the accountant if the client were audited. A large accounting firm is trying to d ...
1. What is the difference between a stratum and a cluster? 2. What is the drawback of obtaining random samples by telephone? 3. In what way would the use of sampling improve the accuracy of the United States census?
The time spent(in days) waiting for a heart transplant in two states for patients with type A+ blood can be approximated by a normal distribution, as shown in the graph to the right. Complete parts(a) and(b) below. μ = 1 ...
A car salesmen claims that a particular make of a car would give a mean mileage of greater than 20mpg. If I ran 10 cars on one gallon of gas each and came up with 10 different results, what statistical formula would I us ...
Suppose that the matching problem is to match nm men to nw women, where nw (a) Describe in detail the generalization of the Gale-Shapley algorithm for this case. Prove that the algorithm terminates with a stable matching ...
Shoesmith Wave, Inc., a new and largely unproven economic forecasting service, expects the inflation rate in South Korea to average 9 percent per year over the next five years. In comparison, Shoesmith expects a U.S. inf ...
Putting Measurement to Work This exercise gives you the opportunity to develop a measurement strategy of your own. 1. Identify an area of the social sciences you know something about (aging, marriage and the family, crim ...
Consider a normal population with μ = 47 and σ = 6. Calculate the z-score for an x of 46.3 from a sample of size 26. (Give your answer correct to two decimal places.
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