Please calculate the following Chi Square equations.  1. Chi Square Single Sample Physical activity generally declines when students leave high school and enroll in college.  This suggests that college is an ideal setting to promote physical activity.  One study examined the level of physical activity  in a sample of 570 college students.  Use the hypothesis steps provided in the video to determine whether there is a significant difference  in physical activity among college students.  State whether you reject or fail to reject the null hypothesis.

A local coach wants to see if training in light rooms or dark rooms impacts athlete performance. With the single team, the coach tries training in different conditions and takes measurements. She ran her analysis in Microsoft Excel and received the following output table. If the P value is less than 0.05, the null hypothesis may be rejected. Based on the data table, what decision should the coach make about the hypothesis?                  Coach should reject the null hypothesis.   Coach should fail to reject the null hypothesis.     Coach should accept the null hypothesis.    Coach does not have enough information to decide.

Do single-parent families tend to be more impoverished than families with two parents? In order to test if there is a relationship between family structure and family income level, family researcher studied a sample of 35 one-parent and 65 two-parent families in a particular city to determine whether their total family income fell below the poverty level. _________________________Family Structure____________________________ Total family Income               One Parent                  Two Parents                TOTAL Below poverty level                      24                                      20                        44     Not Below Poverty Level                                            11                                      45                         56 Total                                            35                                      65                        100 What are the independent and dependent variables.? What is the null hypothesis? What test should we use?…

College students and STDs: A recent report estimated that 25% of all college students in the United States have a sexually transmitted disease (STD). Due to the demographics of the community, the director of the campus health center believes that the proportion of students who have a STD is higher at his college. He tests H0: p = 0.25 versus Ha: p > 0.25. The campus health center staff select a random sample of 150 students and determine that 43 have been diagnosed with a STD. Conduct a hypothesis test to address the director’s hypothesis. Use a 5% significance level to make your decision. Use the applet to determine the P‑value. Click here to open the applet. Which of the following is an appropriate conclusion based on the results?  The data provides strong evidence that the proportion of students at his college who have a STD is more than 25%.  The data suggests that the proportion of students at his college who have a STD is 29%.  Of the students surveyed at his college, 29%…

Effect size is the amount of statistical importance a particular finding has in psychological practice. the power of a study divided by the sample size. the sample size multiplied by 1 – beta.  the degree to which an experimental manipulation separates two populations.

For each effect, state whether the null hypothesis was rejected or not. Calculate the effect size for the effect of stress

Do single-parent families tend to be more impoverished than families with two parents? In order to test if there is a relationship between family structure and family income level, family researcher studied a sample of 35 one-parent and 65 two-parent families in a particular city to determine whether their total family income fell below the poverty level. _________________________Family Structure____________________________ Total family Income               One Parent                  Two Parents                TOTAL Below poverty level                      24                                      20                        44     Not Below Poverty Level                                            11                                      45                         56 Total                                            35                                      65                        100 What are the independent and dependent variables.? What is the null hypothesis? What test should we use?…

Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data.  Test the null hypothesis that the population frequencies for each category are equal.  α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 40 fo = 60 fo =55 fo = 45 fe = fe = fe = fe =   Chi Square test statistic = ______ Group of answer choices