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- review(7a): The following table summarizes the outcome of a study that researchers carried to determine if females expressed a greater fear of heights than male. How many categorical variables are summarized in the table? Men Women Expressed fear for heights 68 109 did not expressed a fear for heights 94 89One True Love by Educational Level A study is conducted in which people were asked whether they agreed or disagreed with the statement that there is only one true love for each person. The table below gives a two-way table showing the answers to this question as well as the education level of the respondents. A person's education is categorized as HS (high school degree or less), Some (some college), or College (college graduate or higher). Is the level of a person's education related to how the person feels about one true love? If there is a significant association between these two variables, describe how they are related. chi-square statistic = i p-value = HS Some College Total Agree Disagree 556 469 Don't know Total 364 166 15 29 198 791 27 935 664 1016 728 1816 71 2615 Round your answer for the chi-square statistic to one decimal place, and your answer for the p-value to three decimal places. Table 1 Educational level and belief in One True LoveA psychologist wants to test the influence of color on object recognition in 4-year olds. She recruits 25 children and shows them two sets of pictures of everyday objects (variable = picture type), has the children name them, and measures the time it takes (variable = reaction time). She shows the children a color set of pictures first and then shows them a black and white set of pictures. a) What is the independent variable? b) What is the dependent variable? c) What is the second independent variable? d) What is the second dependent variable? e) Is "picture type" a within-subjects or between-subjects variable? f) What scale of measurement is reaction time? g) What scale of measurement is picture type? h) The order of presentation of the picture sets is what kind of variable?
- If observations are independent, that means that one observation has influenced another. True FalseAnswer for this question from the word bankThe contingency table below shows the blood types of a sample of patients cross classified by gender. How many women with blood type AB would you expect if there was no association between these two variables? A AB Total Female 42 55 11 4 112 Male Total 55 43 16 120 97 98 27 10 232 O 5.2 O 10 O 4.8 4.
- 24) Some research has shown that swearing can help reduce ratings of pain (Stephens, Atkins, & Kingston, 2009). In one such study, each participant was asked to plunge a hand into icy water and keep it there as long as the pain would allow. In one condition, the participants repeated their favorite curse words while their hands were in the water. In the other condition, the participants repeated a neutral word. In addition to lowering the participants’ perception of pain, swearing also increased the amount of time they were able to tolerate the pain. Data similar to the results obtained in their study are shown in the following table. Amount of Time (in Seconds) Participant Swear Words Neutral Words 1 94 59 2 70 61 3 52 47 4 83 60 5 46 35 6 117 92 7 69 53 8 39 30 9 51 56 10 73 61 Do these data indicate a significant difference in pain tolerance between the two conditions?…What are the variables ? Which ones are quantitative and categorical ?our question: $ 4 R V 4) There shouldn't be a blood group difference between men and women as blood group type is not dependent on sex. However, you want to determine if there is any evidence to doubt this. You go out and collect the following data on blood types: Sex % Blood type 5 T G B Can you find a significant difference in blood types based on sex? Make sure you clearly state Ho, H₁, etc. Also clearly write out your decision and what it means. Q Search 6 A B Y AB O Male 128 23 14 131 & U 8 Female 159 33 18 161 N M | K H J K 9 O ▶11 O Course: BIOL 214 L P dele back
- Identify each of the variables as quantitative or categorical. Also, identify each of the variables as an explanatory variable or a response variable.2. Do men with more children have higher blood pressure? In a study, blood pressures of men with more than three children were compared with those of men with three or fewer children. Which of the following is true for this study? a) The response variable is blood pressure. O b) The explanatory variable is blood pressure. c) The explanatory variable is number ofchildren ("more than three" vs. "three or fewer"). d) Both a and c ENGExpress the alternative hypothesis in symbolic form. A psychologist claims that the mean amount of time (in hours) that females spend in talk therapy is more than that of men. Assume that two samples are independent. Let the female talk therapy times be the first population and the male talk therapy times be the second population.
