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... • The variance of , denoted by 2, is the same for all values of the independent variable. • The values of are independent. • The error is a normally distributed random variable. ...
... • The variance of , denoted by 2, is the same for all values of the independent variable. • The values of are independent. • The error is a normally distributed random variable. ...
An Expanded Sample Exam BUS 302L Statistics Exam
... tail” or “one side” of the distribution. B. No, because the “…inspector needs to learn if customers are getting fewer ounces…” (emphasis added). The inspector is not interested in results greater than 28 ounces. C. Yes, because the “…inspector needs to learn if customers are getting fewer ounces…” ( ...
... tail” or “one side” of the distribution. B. No, because the “…inspector needs to learn if customers are getting fewer ounces…” (emphasis added). The inspector is not interested in results greater than 28 ounces. C. Yes, because the “…inspector needs to learn if customers are getting fewer ounces…” ( ...
Building possibility distribution based on confidence intervals of
... from data requires an a priori knowledge about the shape of the distribution. Once the shape is known, we can estimate the optimal parameters value from the data set. However, there is always a gap between the estimated parameters from the sample sets and true parameters, and this gap depends on the ...
... from data requires an a priori knowledge about the shape of the distribution. Once the shape is known, we can estimate the optimal parameters value from the data set. However, there is always a gap between the estimated parameters from the sample sets and true parameters, and this gap depends on the ...
1 ISC 207 Practice questions for Quiz-3 (Solutions)
... a. What is the value of the test statistic? (103-100)/(18/sqrt(18)) = 3/2 = 1.5 b. What is the rejection region at alpha of 0.05? >1.96 or <-1.96 c. What will be your decision at alpha of 0.05? Fail to reject H0 d. What is the p-value for this study? 2*P(z>1.5) = 2*(1-0.93319) = 2*0.06681=0.13362 e. ...
... a. What is the value of the test statistic? (103-100)/(18/sqrt(18)) = 3/2 = 1.5 b. What is the rejection region at alpha of 0.05? >1.96 or <-1.96 c. What will be your decision at alpha of 0.05? Fail to reject H0 d. What is the p-value for this study? 2*P(z>1.5) = 2*(1-0.93319) = 2*0.06681=0.13362 e. ...
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... probability that the test will reject the null hypothesis when the alternative value of the mean is true. Calculation of the exact power of the t-test is a bit complex. But an approximate calculation that acts as if σ were known is almost always adequate for planning a study. This calculation is ver ...
... probability that the test will reject the null hypothesis when the alternative value of the mean is true. Calculation of the exact power of the t-test is a bit complex. But an approximate calculation that acts as if σ were known is almost always adequate for planning a study. This calculation is ver ...
Estimate
... Another well known and popular estimator is the least-square estimator. If we have a sample and we think that (because of some knowledge we had before) all parameters of interest are inside the mean value of the population then least squares methods estimates by minimising the square of the differen ...
... Another well known and popular estimator is the least-square estimator. If we have a sample and we think that (because of some knowledge we had before) all parameters of interest are inside the mean value of the population then least squares methods estimates by minimising the square of the differen ...
