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If [0 is less than X is less than 1 ], then X^2 is less than X. If you square a positive fraction or a positive decimal (i.e., a number that falls between zero and one) then the result is always a smaller number.
If the Pearson Correlation is 0.18, what do we get, what is the value called, and what does it tell us?
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.
Create a 95% confidence interval for population mean. Is it sensible that population mean is 28 weeks? give explanation for your answer.
In study of a clinical for an allergy drug 115 of the 204 subjects reported experiencing important relief from their symptoms.
A firm keeps account for 28 customers. 12 of these are defined as new customers and 14 are locally based. If just 3 new customers live locally, how many established customers do not live locally?
Testing for a linear correlation. Construct a scatter plot, find the value of the linear correlation coefficient r, and find the critical values of r from the table below using a=0.05.
Let X 1 , X 2 , X 3 , X 4 be a random sample from a Poisson distribution with parameter λ and let Y = X 1 + X 2 + X 3 + X 4 . You decide to test λ = 1.60 versus λ
The data follow. Males Females 27 25 25 29 19 18 10 23 16 20 22 15 14 19 (a) What statistical test should be used to analyze these data?
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error??
The instructor wanted to "pass" anyone who scored above 69. What proportion of exams will have passing scores?
Verify that this is valid density function. Find out probability that weight is smaller than 24 ounces.
Test at 5% significance level null hypothesis that population mean is 40 hours against alternative that it is higher.
Compute the difference scores for following data from repeated-measures study.
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