Introduction to Statistics
... ◊ Mutually exclusive events: Two events ◊ Mutually exclusive events: Three events ◊ Independent events: Two events ◊ Independent events: Three events ◊ The curious die ◊ Conditional probability: Mutually exclusive events ◊ Conditional probability: Independent events ♦ Random Variables and Distributi ...
... ◊ Mutually exclusive events: Two events ◊ Mutually exclusive events: Three events ◊ Independent events: Two events ◊ Independent events: Three events ◊ The curious die ◊ Conditional probability: Mutually exclusive events ◊ Conditional probability: Independent events ♦ Random Variables and Distributi ...
251y0312 - On-line Web Courses
... 12. According to the Bienayme-Chebyshev rule (I called it Chebyshef’s Inequality), at least 93.75% of all observations in any data set are contained within a distance of how many standard deviations around the mean? a) 1 b) 2 c) 3 d) *4 Explanation: If at least 93.75% are ‘in,’ then at most 6.25% ar ...
... 12. According to the Bienayme-Chebyshev rule (I called it Chebyshef’s Inequality), at least 93.75% of all observations in any data set are contained within a distance of how many standard deviations around the mean? a) 1 b) 2 c) 3 d) *4 Explanation: If at least 93.75% are ‘in,’ then at most 6.25% ar ...
TPS4e Ch8-8.1
... Individual observations are independent. When sampling without replacement, the sample size n should be no more than 10% of the population size N (the 10% condition) to use our formula for the standard deviation of the statistic. ...
... Individual observations are independent. When sampling without replacement, the sample size n should be no more than 10% of the population size N (the 10% condition) to use our formula for the standard deviation of the statistic. ...
Sample standard deviation
... 99% confident that the point estimate will be no more than 0.04 units from the true value of p. Determine the sample size needed if no previous information about p is available. (a) 4148 (b) 1037 (c) 1033 (d) 65 13. A corporation needs to estimate p, the proportion of its employees that commute to w ...
... 99% confident that the point estimate will be no more than 0.04 units from the true value of p. Determine the sample size needed if no previous information about p is available. (a) 4148 (b) 1037 (c) 1033 (d) 65 13. A corporation needs to estimate p, the proportion of its employees that commute to w ...
Data Analysis
... Estimated range within which population mean falls – e.g., 95% confidence interval of mean, based on our sample, is (1.57 8.77) where = population mean – We are 95% confident true mean of population (from which our sample was drawn) lies within this range ...
... Estimated range within which population mean falls – e.g., 95% confidence interval of mean, based on our sample, is (1.57 8.77) where = population mean – We are 95% confident true mean of population (from which our sample was drawn) lies within this range ...
doc - Wayne Smith
... A. No, because .5 is the relationship (in this case, direct, negative relationship) between the number of months since purchase (X, the independent variable) and the number of hours used (Y, the dependent variable). .5 is the slope of the line determined by the equation. A use of 30 minutes (Y) woul ...
... A. No, because .5 is the relationship (in this case, direct, negative relationship) between the number of months since purchase (X, the independent variable) and the number of hours used (Y, the dependent variable). .5 is the slope of the line determined by the equation. A use of 30 minutes (Y) woul ...
