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According to Zero Population Growth, the average urban U.S. resident consumes 3.3 pounds of food per day. Is this figure accurate for rural U.S. residents? Suppose 64 rural U.S. residents are identified by a random procedure and their average consumption per day is 3.45 pounds of food. Assume a population standard deviation of 1.31 pounds of food per day. Determine whether the Zero Population Growth data for urban U.S. resident is also true for rural U.S. residents on the basis of the sample data with α=0.05.
Establish the Null and alternative hypothesis, and choose the right test statistics. NO need to carry out the test.
Where does the p-value come from for the spatial scan statistic used in SaTScan? Explain how Monte Carlo simulation is used to derive a p-value for a cluster.
When such digits are randomly generated, what is the distribution of those digits? Given such randomly generated digits, what is a test for "goodness-of-fit"?
If one person is selected at random, what is the probability that person is Female?
Testing for Population mean - Based on this sample evidence, is Joan's supervisor correct? Use a = .05.
The results for college x was a mean of 5 hours and an estimated population variance of 2 hours: for college y, m= 4, s 2 =1.5; and for college Z, M= 6, s 2 =2.5 what should you conclude? Use the .5 level.
Assume that the significance level is a= 0.1. Use the given information to find the p-value and the critical value (s). With H1: p = with line through it 1/2 the test statistic is z= - 1.35
As part of a safety check, the Keystone Cops randomly stopped 65 ambulances and checked their tire pressure. The sample mean was 32 lbs/sq. in. with a sample standard deviation of 2 lbs/sq. in. Find the 98% confidence interval for the population m..
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
Can we conclude there is a difference in mean number of surgeries performed by hospital or by day of week?
Why is effective sampling important when performing a hypothesis test? What could happen if your sample is not appropriate to your study?
Calculate the expected number of days it takes to get the order and standard deviation.
Using a significance test, evaluate whether or not there has been a change in the percent of Internet users who download music. Provide all details for the test. (Round your value for z to two decimal places. Round your P-value to four decimal pla..
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