PSY230 Introduction to Statistics Lesson 12 Quiz: question and answer new exam solution Chamberlain College of Nursing

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PSY230 Introduction to Statistics Lesson 12 Quiz: question and answer new exam solution Chamberlain College of Nursing This is assignment is worth 20 points. Please make sure you have answered a... ll questions in this part prior to submitting. Once answers are submitted, you will not be able to return to this section. Question 1 of 20 Have shoe brand preferences changed between last year and this year? 1000 people were observed this year and last year to see what brand of shoe they were wearing. What is the appropriate statistical test? Question 2 of 20 The chi-square test is only used when we have ordinal data. Question 3 of 20 The bigger the chi square statistic, the ________ the p-value. Question 4 of 20 How can low expected values be dealt with? Question 5 of 20 What type of data do you use for a chi-square table? Question 6 of 20 A study was performed to examine the personal goals of children in elementary school. A random sample of 602 students was selected from elementary schools in a large school district. The students were asked what they would most like to do at school: make good grades, be popular, or be good at sports. Results are presented in the table below by the gender of the child. Boys Girls make good grades 96 295 be popular 32 45 be good at sports 94 40 The value of the chi-square test statistic was 89.97. What is the statistical decision, using a level of significance of .05? Question 7 of 20 The null hypothesis for the chi-square goodness-of-fit test states that the distribution of Question 8 of 20 Which chi-square test uses contingency tables? Question 9 of 20 This two-way table summarizes data about the occurrences of two patient measurements in combination: blood pressure (BP) and cholesterol level (C) for 53 individuals who were measured at the infirmary of a large steel mill as part of their annual check-ups: High BP HBP Normal BP NBP High Cholesterol HC 13 11 Normal Cholesterol NC 8 21 Which hypothesis test would be appropriate for testing the relationship between cholesterol and blood pressure? Question 10 of 20 Is the type of television show that a person chooses to watch related to the brand of toothpaste that a person uses? 1500 people were surveyed. What is the appropriate statistical test? Question 11 of 20 What is the expected value for all cells, if we assume that this is a fair six-sided die? Face Value Observed 1 19 2 15 3 10 4 14 5 17 6 21 Question 12 of 20 It is family game night in Minneapolis. Folks settle in to play their favorite game and eat their favorite snack. A random sample of 115 families was asked about their preferred game and snack, and the results are presented in the two-way table below. Corn Chips Chips & Salsa Cookies Yahtzee 10 3 12 Trivial Pursuit 8 14 7 Monopoly 14 17 7 Hearts 12 7 4 How many degrees of freedom would you use for testing the null hypothesis that game preference is independent of snack preference? Question 13 of 20 The null hypothesis for all chi-square tests asks whether the observed number of cases in a sample what we expect from knowledge of the population. Question 14 of 20 Contingency tables and degrees of freedom are key elements in a chi-square test. Question 15 of 20 Which of the following is the correct formula for the chi-square goodness-of-fit test? Question 16 of 20 The degrees of freedom for a 2 x 2 contingency table for the chi-square test of independence equal Question 17 of 20 Is the type of music that people listen to related to the state that they were born in? 10,000 Americans were asked what type of music they listened to and where they were born. What is the appropriate statistical test? Question 18 of 20 What are the degrees of freedom for the following χ² test? Effect of Caffeine on Chess Players’ Performance Condition Win Lose Draw Total Caffeine 12 18 10 40 No Caffeine 13 7 10 30 Total 25 25 20 70 Question 19 of 20 The least expected value in each contingency table cell in order for a chi-square test to be effective is... Question 20 of 20 What is the null hypothesis in a chi-square test? Perception is licensed to Rio Salado CollegeCopyright © 2016 Rio Salado College. All Rights Reserved. Aug 31 2020 | Logged in as : MAR2441551 Introduction PSY230 Introduction to Statistics Lesson 12 Roundup Exercise Assignment This is assignment is worth 15 points. Please make sure you have answered all questions in this part prior to submitting. Once answers are submitted, you will not be able to return to this section. Question 1 of 5 Describe a scenario where a researcher could use a Goodness of Fit Test to answer a research question. Fully describe the scenario and the variables involved and explain the rationale for your answer. Why is that test appropriate to use? (3 points) Question 2 of 5 Describe a scenario where a researcher could use a Test for Independence to answer a research question. Fully describe the scenario and the variables involved and explain the rationale for your answer. Why is that test appropriate to use? (3 points) Question 3 of 5 The Goodness of Fit Test and Test for Independence both use the same formula to calculate chi-square. Why? I.e., explain the logic of the test. (3 points) Question 4 of 5 Compare the Goodness of Fit Test and the Test for Independence in terms of the number of variables and levels of those that can be compared. In what ways are they similar or different? (3 points) Question 5 of 5 Describe how the Test for Independence and correlation are similar yet different. (3 points) [Show More]

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