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A report states that 72% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.04 with 98% confidence?
Where S, A, and R are measured in dollars per week. Vanguard's marketing director is comfortable using parameter estimates that are statistically significant at the 10% level or better.
Find an unbiased estimator of mp(1 - p)/n. Find the optimal estimator using the Rao-Blackwell Theorem.
If sample mean is M=44. Is this sufficient to demonstrate significant effect? Again assume a Two-tailed test with a=0.05.
A small New England college has a total of 400 students.The Math SAT is required for admission, and the mean score of all 400 students is 620. The population standard deviation is found to be 60. The formula for a 95% confidence interval yields th..
Based on long term experience, the standard deviation can be taken to be $2.92. Find a 90% confidence interval for the average amount left by all groups.
In a paragraph explain the differences between the Independent Samples and Paired Samples T-Test. When do you use each? Purpose a research question that could be addressed using each test
The probability the second truck is available is .51, and the probability that both trucks are available is .41: What is the probability neither truck is available?
Initially the wheel rotates with an angular speed W, causing the block to rise with a linear speed v = 0.33 m/s. Find the moment of inertia of the wheel if the block rises to a height of = 7.9 before momentarily coming to rest.
Determine the number of successes suggested by the given statement.
What is a point estimate for the population mean µ?
Test the null hypothesis that a population mean is 50 against the alternate hypothesis that the mean is not 50. What "model" should be used and why?
Using the appropriate statistical procedure on the SPSS, test the between group means for a significant difference.
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