STAT 401 Lecture Notes - Lecture 10: Simple Random Sample, Null Hypothesis
29 Sep 2017
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T = s/ n: the true average coating weight is significantly different from the production specified. 8 assuming the null is true. is the average weight of a supposed 200 pound weight. P-value is close to zero here so we reject the null hypothesis. there appears to be a significant weight difference in the coating weight of the painted objects. Ha : / 3 n = 3. T calc = . 295 true average percentage of organic matter in the soil. assuming the null is true. We use an approximation for the t-value because we can"t get the exact result on a table. we get a p-value of . 082 which is less than the . Would not reject the null at the 0. 05 significance level since the p-value would be greater. The sampling method is simple random sampling. (p(1 p ))/n0 outcomes a success and the other, a failure. The sample includes at least 10 successes and 10 failures.
