Chi-square test of independence is usually used to determine: a. whether one nominal/ordinal variable is mutually exclusive with the other numerical variable b. whether a single nominal/ordinal indpendent variable predicts a single numerical dependent variable c. whether a single numerical independent variable predicts a single numerical dependent variable d. whether one nominal/ordinal variable is contingent upon the other nominal/ordinal variable
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Chi-square test of independence is usually used to determine:
a. whether one nominal/ordinal variable is mutually exclusive with the other numerical variable
b. whether a single nominal/ordinal indpendent variable predicts a single numerical dependent variable
c. whether a single numerical independent variable predicts a single numerical dependent variable
d. whether one nominal/ordinal variable is contingent upon the other nominal/ordinal variable
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- A chi-square test for independence is being used to evaluate the relationship between two variables. If the hypothesis test has df = 3, what can a researcher conclude about the two variables? a. One variable consists of 2 categories, and the other consists of 3 categories. b. One variable consists of 2 categories, and the other consists of 4 categories. c. Both variables consist of 2 categories. d. Both variables consist of 3 categories.A chi-square test for independence is being used to evaluate the relationship between two variables. If the hypothesis test has df = 1, what can a researcher conclude about the two variables? a. One variable consists of 2 categories, and the other consists of 3 categories. b. Each variable consists of 3 categories. c. Each variable consists of 2 categories. d. One variable consists of 2 categories, and the other consists of 4 categories.Gender Use of Technology Male Female Total High 10 16 26 Average 6 4 10 Low 11 13 24 Total 27 33 60 Is Male and high use of technology independent? b). Is Female and low use of technology mutually exclusive?
- The power of a test is measured by its capability of _______________ a. not rejecting a null hypothesis that is false. b. rejecting a null hypothesis that is false. c. not rejecting a null hypothesis that is true. d.rejecting a null hypothesis that is true.A chi square test for homogeneity applies to: Select one: a. data from a single random sample where the sample is classified by values of three or more categorical variables. b. data from samples from two or more populations where each sample is classified by values of two categorical variables. c. data from samples from two or more populations where each sample is classified by values of a single categorical variable. d. data from a single random sample where the sample is classified by values of two categorical variables.identify the independent variable, the dependant variable and the unit of analysis of the following statement Whitfield, D.L., Kattari, S.K., Langenderfer-Magruder, L., Walls, E.N. and Ramos, D.A. (2019). The crossroads of identities: Predictors of harassment among lesbian, gay, bisexual, and queer adults. Journal of the Society for Social Work and Research, 10(2): 237-260. Independent variable(s)______________________________________________________ Dependent variable(s)_______________________________________________________ Unit of analysis_______________________________________________________
- Hemispherical Conductor produces the 80J84 microprocessor, which the Sayle Company plans to use in a heart–lung machine. Because of the sensitivity of the application,Sayle has established a value of AQL of .001 and LTPD of .005. Sayle purchases themicroprocessors in lots of 500 and tests 100 from each lot. The testing requires destruction of the microprocessor. The lot is rejected if any defectives are found.a. What are the values of p0, p1, n, and c used?15 wheelchair users were randomly assigned to three groups with 5 in each group. These participants navigated in virtual-reality settings. Group 1 participants were in the virtual-reality setting (a building) as wheelchair users. Group 2 participants were in the virtual-reality setting in a wheelchair pushed by a walking person. Group 3 participants walked without aid in the virtual-reality setting. Joan measured the time each participant needed to complete the navigation of the virtual-reality setting. What is the independent variable(s)?1. A professor believes that people learn better when they are taught in an active rather than passive fashion. To test this, he teaches a group of students from the CJBS subject pool a lesson and then gives them a test. Half of the subjects are taught by listening to a lecture, the other half are taught by having them complete work sheets. a) What is/are the independent variable(s)? Is each one a true independent variable or a subjectvariable?b) How many levels are there for each I.V.? What are they?c) What is/are the dependent variable(s)? How is it measured or operationalized?2. A criminologist is studying college students’ attitudes toward sentences for those convicted of drinking and driving. He is specifically interested in attitude change as a result of years in college and viewing the consequences of drinking and driving accidents. He exposes freshmen, sophomores, juniors, and seniors to photos that depict either mild (broken arms or legs and scratches), moderate (serious…
- A dietitian wants to test if on the average a person’s cholesterol level will be lowered if their diet is supplemented with a certain mineral. Six subjects have their cholesterol level tested before taking this mineral and again after taking this mineral for a 3 months. The measured cholesterol levels are listed in the table below: Level Before Mineral 210 235 208 190 172 244 Level After Mineral 190 170 210 188 173 228 When doing a Hypothesis Test to test this dietitian's claim the Degree of Freedom used and the computed P-value are A.) Degree of Freedom = 10 and P-value = 0.1349 B.) Degree of Freedom = 9.6562 and P-value = 0.1354 C.) Degree of Freedom = 5 and P-Value = 0.1688 D.) Degree of Freedom = 5 and P-value = 0.0844Claim: A majority of adults would erase all of their personal information online if they could. A software firm survey of 476 randomly selected adults showed that 64% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. Question content area bottom Part 1 a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information. ▼ ▼ less than< equals= greater than> not equals≠ enter your response here (Type an integer or a decimal. Do not round.)1A. State the null and research hypothesis 2A. Make a decision based on the information provided 3A. State the type of error that may exist under the condition.