HW #5: Due Wednesday June 13
... one mean, the difference between 2 means, one proportion, and the difference between 2 proportions. In this section, we will concentrate on the important relationship between hypothesis testing and confidence interval. Confidence Intervals and Two-sided Alternatives When testing one population mean ...
... one mean, the difference between 2 means, one proportion, and the difference between 2 proportions. In this section, we will concentrate on the important relationship between hypothesis testing and confidence interval. Confidence Intervals and Two-sided Alternatives When testing one population mean ...
1 Statistical Tests of Hypotheses
... A company is advertising that the average lifetime of their light bulbs is 1000 hours. You might question this, and want to show that in fact the lifetime is shorter. You would test H0 : µ ≥ 1000 versus Ha : µ < 1000. Rejection of H0 would then support your claim. However, nonrejection of H0 doesn’t ...
... A company is advertising that the average lifetime of their light bulbs is 1000 hours. You might question this, and want to show that in fact the lifetime is shorter. You would test H0 : µ ≥ 1000 versus Ha : µ < 1000. Rejection of H0 would then support your claim. However, nonrejection of H0 doesn’t ...
Sampling Distributions
... Imagine that many polls of 1001 Americans are done to find the proportion of those who supported Alito’s nomination. Although the poll results vary, more samples have a mean that is close to the population parameter μ=.74. ...
... Imagine that many polls of 1001 Americans are done to find the proportion of those who supported Alito’s nomination. Although the poll results vary, more samples have a mean that is close to the population parameter μ=.74. ...
