STAT 200 Lecture Notes - Lecture 10: Situation Two, Confidence Interval, Normal Distribution

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27 Jul 2015
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Ha: p is not equal to 0. 3. Using test statistic to find out p-value. Using p-value to compare to aah (x=0. 05) Test statistic to value and get conclusion. Comparative number is not fixed (no x=0. 05) Find what ahha(x=0. 05) is equal to on a z-table. Researches manipulate something and measure the effect of the manipulation on some outcome of interest. Researchers observe or question participants about opinions, behaviors, or outcomes. If something is big enough it will always end in normal distribution. The sample means of random sample from a population with mean and finite standard deviation . Then the sample means are approximately normally distributed with mean and standard deviation / s. r. of n. No matter what the parent population if you can get mean and s. d. yo. Population mean ( one sample) ucan normally distributed. Estimating the mean of a quantitative variable.

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