You are conducting a test of independence for the claim that two different categories are independent. Here is the sample data. Category C D A 43 77 B 19 39 The expected observations for this table would be Category с D A B The resulting Category A B (O - E)² E C are: D What is the chi-square test-statistic for this data? x² = What is the P-Value for this test-statistic? P-Value = What conclusion can you make about the hypothesis? O No, the proportions of each characteristic are not the same in each population. Yes, the proportions of each characteristic are the same in each population. Report all answers accurate to three decimal places. Report all answers accurate to three decimal places.

You are conducting a test of independence for the claim that two different categories are independent. Here is the sample data. Category C D A 43 77 B 19 39 The expected observations for this table would be Category с D A B The resulting Category A B (O - E)² E C are: D What is the chi-square test-statistic for this data? x² = What is the P-Value for this test-statistic? P-Value = What conclusion can you make about the hypothesis? O No, the proportions of each characteristic are not the same in each population. Yes, the proportions of each characteristic are the same in each population. Report all answers accurate to three decimal places. Report all answers accurate to three decimal places.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An HR Director wants to know if there is a difference between Dept 1 and Dept 2 in their employee performance evaluation ratings. The performance evaluation scores for the two departments are below. Perform a t-Test on the data to answer the Director’s question. What is the Null Hypothesis (Ho:)? What is the Research Question or Alternative Hypothesis (Ha:)? Perform the t-Test and show the results (two-sample assume equal variance). Dept 1 Dept 2 3.15 3.2 3.1 3.25 2.95 3.1 3.2 3.6 3.4 2.9 3.12 2.8 3.6 3.1 2.5 3.5 2.8 3.4 2.75 2.8 2.1 2.7 3 3.7 3.2 3.2 3.5 3.5 3.8 3.2 3.2 2.8 3.4 2.15 3.2 2.9 2.6 3.16 2.8 3.14
In a test of the difference between the two means below, what should the test value be for a t test? Sample mean Sample variance Sample size 0 -0.25 O -0.09 O -0.12 O-1.93 Sample 1 520 500 9 Sample 2 535 60 12
You are interested in testing if there is an association between marital status (married vs. never married) and BMI (quantitative). Which of the following is the most appropriate statistical test that you will you use? A. One-sample T-testB. Independent Sample t-testC. Chi Square testD. None of the above
Need C and D
A researcher wants to know if the news station a person watches is a factor in the amount of time (in minutes) that they watch. The table below shows data that was collected from a survey. Local FOX CNN 44 55 65 46 62 65 32 24 49 22 67 52 23 63 59 38 63 57 26 18 37 38 29 41 The test-statistic for this data = (Please show your answer to 3 decimal places.) The p-value for this sample = (Please show your answer to 4 decimal places.) The p-value is αα Base on this, we should hypothesis As such, the final conclusion is that... There is sufficient evidence to support the claim that station is a factor in the amount of time people watch the news. There is insufficient evidence to support the claim that station is a factor in the amount of time people watch the news.
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Q.19 Urgent question! I will thumbs up! In the final answer that you circle, please also include the brief approach / formula you used under "Answer". Thanks!
What are the values for SS and variance for the following sample of n = 3 scores? Sample: 8, 5, 2
4 4G I. moodle.unizwa.edu.om a | Quiz3 Time left 0:00:21 Question 3 Answer saved Marked out of 2.00 P Flag question Which one of the following choices describes a problem for which an analysis of variance would be appropriate? O A. Comparing the proportion of successes for three different treatments of anxiety. Each treatment is tried on 100 patients O B. Analyzing the relationship between high school GPA and college GPA O . Analyzing the relationship between gender and opinion about capital punishment (favor or oppose). O D. Comparing the mean birth weights of newborn babies for three different hospitals. O E. None of these Clear my choice Previous page Next page 1 2w-ANOVA(3) Jump to... Quiz navigation 7 +
Which statement best represents the logic of a one way analysis of variance which also called ANOVA which is also called the F test? A. Under the null, The population means are equal to each other, so any difference in sample means will register as significant difference B. Under the null, at least one mean is different from the others, so if this condition is met with the data, it will register as a significant difference C. Under the null, The means are assumed to be equal; as a result the between group variance will equal the within group variance ; if the calculated SSbetween is sufficiently larger than SSbetween this would suggest the between group variation is larger than within group variation and indicate there is a significant difference amount the means D. Under the null, the means are assumed to be equal, as a result, the within group variance will be larger than the between group variance and this will be revealed by a significant F, which would indicate that the…
What is the standard error for the independent sample t statistic for the two samples? Sample 1 n = 6, SS = 56 Sample 2 n = 4, SS = 40 Select one: 2.24 9.6 12 5
"What i v nighest level of education you've completed?" and "If you're employed full-time, how many hours do you spend working at your job during a typical week?" In a recent year, 1125 respondents answered both questions. The summary statistics are given in the chart below. (The sample data consist of the times, in hours per week, that were given by the respondents.) Sample Sample Sample size Groups mean variance Less than h.s. 257 43.1 110.1 High school 292 44.2 84.9 Bachelor's 294 42.7 105.8 Graduate 282 43.6 100.8 Send data to calculator Send data to Excel To decide if there are any differences in the mean hours per week worked by these different groups, we can perform a one-way, independent-samples ANOVA test. Such a test uses the following statistic. Variation between the samples F = Variation within the samples For the data from the survey, F - 1.22. (a) Give the p-value corresponding to this value of the F statistic. Round your answer to at least three decimal places. (b) From…