How to calculate confidence intervals for percentages in spss,soulmate finder quiz,the secret fire review uk,how to train your brain to focus more - For Begninners

6.  Understand how sample size, level of confidence and standard deviation affect confidence interval length. Other scenarios to think about:  What would happen to the length of our confidence intervals if we increase our sample size from 60 to 100?  Would our intervals decrease or increase in length?  What if the population standard deviation increased?

3.  How large a sample of one-bedroom apartments above would be needed to estimate the population mean within plus or minus $50 with 90% confidence? Which of the assumptions listed above might be problematic in making inference to the population in Question 4?

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