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A surbey of 200 workers was asked how much they use the internet at work. 150 said they used it within limits, and 30 said they did not use the internet at work.
Construct a 99% confidence interval estimate for the proportion of all workers who did not use the internet at work
If you want to be 95% confidence of estmating the population mean to within a sampling error of +-4 and the standard deviation is assumed to be 10, what sample size is required?
Prediction interval for the regression line - Using the age and sick days data from table below, find the 98% prediction interval when x = 47 years.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, represents
A human society claims that less than 36% of US. households own a dog. In random sample of 397 U. S. households, 151 say they own a dog. At mean=0.03, is there enough evidence to support the society's claim?
Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
A carton of 6 batteries contains 2 that are defective and 4 that are good. If we select 3 batteries at random form this carton, what is the probability that the sample contains exactly 1 defective battery?
You are assigned to be part of a team of three analysts of a global management consulting company where of the entire work force of analysts. 55% have had no experience in telecommunications
You are working on an analysis of your company's current cost structure reviewing the various fixed and variable costs within your firm. Your objective is to maximize your firms profit.
Using t test for significance of slope to determine whether the independent variable is a significant predictor of the dependent variable - Find the sum of the least squares slope and intercept parameter?
Using ANOVA, determine if there is a significant difference in the six year graduation rate by type.
Describe the mean difference that is the main effect for the treatment. Describe the mean difference that is the main effect for gender. Is there an interaction between gender and treatment? Explain the answer
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