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"s~eQui-Squre Hypothesis lests ,pdiHunanitie; portani ccnlcspinning wheel _File CUsersfjenni Dowrloads/Qui Squre%2OHypothesis%20lests%20-pdfA" Read aloudD...

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"s~eQui-Squre Hypothesis lests ,pdiHunanitie; portani ccnlcspinning wheel _File CUsersfjenni Dowrloads/Qui Squre%2OHypothesis%20lests%20-pdfA" Read aloudDrawHighlightEraseThe table provided represents results On survey given to U.S. adults Ori the issue 0f regional primary elections The question asked was has been proposed that four indivicual primaries be held in different weeks of June during presidential election years. Does this sound like gooa idea Or bad idea? Good Ider Paor lde2

"s~e Qui-Squre Hypothesis lests ,pdi Hunanitie; portani ccnlc spinning wheel _ File CUsersfjenni Dowrloads/Qui Squre%2OHypothesis%20lests%20-pdf A" Read aloud Draw Highlight Erase The table provided represents results On survey given to U.S. adults Ori the issue 0f regional primary elections The question asked was has been proposed that four indivicual primaries be held in different weeks of June during presidential election years. Does this sound like gooa idea Or bad idea? Good Ider Paor lde2a No opinion Republican Democrat Independent At the 5" level of significance: co the data suggests Ihat- feelings 0l acults on sse cf regional primaries are depencent on political atfiliation? Iyet nctc 1J search Ramcs



Answers

Montana revisited The poll described in Exercise 33 also investigated the respondents’ party affiliations based on what area of the state they lived in. Test an appropriate hypothesis about this table and state your conclusions.
$$\begin{array}{|l|l|l|}\hline \text {} & {\text { Democrat }} & {\text { Republican }} & {\text { Independent }} \\ \hline \text { West } & {39} & {17} & {12} \\ {\text { Northeast }} & {15} & {30} & {12} \\ {\text { Southeast }} & {30} & {31} & {16}\\ \hline\end{array}$$

For a problem like this. It's important to read each part of the question closely because there are two categories of students being pulled Democrats and Republicans. There's an added dimension to finding this probability First, for a person who does not favor the amendment, we're searching for simply someone who doesn't favorite. It does not matter whether they're Democrat or a Republican. That gives us 25 Democrats and nine Republicans for a total of 34 students out of 100 who do not favor the bills. If we're searching simply for any Republican, we are looking at all Republicans whether they are in favor, not in favor or unsure. This gives us 32 that are in favor, nine that are not in favor and four then are unsure for a total of 45 Republicans out of all 100 students. Finally, when selecting a Democrat who is in favor of the amendment, we are looking at a much more specific problem than the last two parts. So we're looking for out of a total of 55 Democrats. How many are in favor of the amendment, so we're not looking at those who are not in favor. We can cancel 25 out. We're not looking at those who are unsure, so we can cancel seven. But we are looking at those who are in favour, which is 23. We will have 23 out of 100 students who are both Democrats.

Yeah, let us look at this question. Suppose a political strategist wants to get a sense of how American others aged 18 or older feel about health care and health insurance in a political pool. What would be a good frame to use for obtaining a sample? What would be a good frame? All the registered voters, right? Register voters? These would form a good frame. Okay? Registered voters who have voted in the past few elections. Sure, let us go to part B. Explain why simple random sampling may not guarantee that the sample has an accurate representation off registered Democrats, Republicans and registered independence. Well, because each individual has an equally likely chance off being selected. And there is a chance that one group may be over or under represented right over our underrepresentation. Over or under represent representation over or under representation. Moving on to part C. Party says. How can stratified sampling guarantee this representation? Because stratified sampling is going to take samples from every strata up right. So there will be a fair representation, a fair representation, representation off all the classes, off all classes off all classes. What are the classes in this case? the classes will be the Democrats, the Republicans and the Independence. Right. So this is how stratified sampling will help over here.

Let us read the statement. The future Government Club wants to sponsor a panel discussion on the upcoming national election. The club wants to have four off its members leave the panel discussion. To be fair, however, the panel should consist of two Democrats and two Republicans from the list of current members of the club obtained a stratified sample off two Democrats and two Republicans to serve on the panel. Now a table is given in the text book on page number 37. This is question number 25 and over here we can see that we have two different columns. One is for Democrats and what is for Republicans In Democrats, You have names like Boldon, Bold Carter and All the Way Till right and then the Republicans. You have name static from blown all the way till Zankel. Now I want to obtain a stratified sample off to write off two people, two from Democrats and two from Republicans. What can that sample B? I can select any too. So let's say I select date and knowledge. Okay, I have Nolan and I have date. These are my Democrats. These are my democrats and what are going to be my Republicans. My Republicans will be. I can select any to, let's say, May and Rice, Let's say May and Rice, these are going to be my Republicans. I can select any sample that I like, but these are just random. So these are Republicans? Yeah, Republicans.


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