Based on the following, does it appear gender and how they will vote are independent or dependent?   Voting For Prop A Voting Against Prop A Undecided Men 100 250 18 Women 170 300 56   p-value = enter correct to 4 decimal places conclusion: enter A or B A: Gender and how they will votes are dependent B: Gender and how they will votes are independent  

John wants to see if the kids in his AP classes have a higher IQ after studying for the IQ test with some new lessons he designed.  He takes a sample of 6 students prior to the study material and find the following IQ’s: 98, 105, 103, 110, 106. After the lessons are concluded he retests the students and find the following IQ’s (respectively): 100, 106, 102, 114, 108 At the 10% significance level, is there evidence that the lessons raised scores on the IQ test?   Q1: This is a Q2: What distribution will you use? Q3: What is the conclusion? meaning Q4: If the truth is that the program raises scores on the IQ test, what error was made?  

IQ is normally distributed with a mean of 100 and a standard deviation of 15. What is the probability of choosing a sample of 9 people randomly from the population and the mean between 92.5 and 102?

We ran a left-sided significance test at 8% with the null hypothesis: H0:

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