what is the general alternative hypothesis for a two tailed independent samples t test
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A: Correct answer is Yes since the p-value for the hypothesis test is very close to zero.
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A: Since both the tests are used to compare the mean response. The only difference is that we use…
Q: Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly,…
A: Given data: Population 1 Population 2 66 70 71 68 69 77 73 78 66 75 66 77 65 71…
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A: Given Data: n1=15 n2=15
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Q: Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly,…
A: There are two independent samples which are exercise regularly and does not exercise regularly. We…
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A: Given that Sample size n =100 Sample mean =6.6 Standard deviation =9
Q: Population 1: 68, 67, 69, 62, 72, 66, 70 Population 2: 70, 73, 77, 72, 70, 70, 77, 71 Is there…
A: Given data : Population 1: 68, 67, 69, 62, 72, 66, 70 Population 2: 70, 73, 77, 72, 70, 70, 77, 71
Q: a.) what is the critical value when the test is one-tailed, the level of significance is 0.05, the…
A: a) Here, the test is one-tailed, the level of significance is 0.05 and the sample size n=34. Degrees…
Q: An independent sample t test provides the following data: Size of sample A is 16, size of sample B…
A: Given that nA=16, sA2=60.8, nB=16, sB2=55.1.
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Q: In general, what characteristics of the difference scores are most likely to produce a significant…
A: We have given statement The characteristics of the difference scores are most likely to produce a…
Q: Can you employ a large sample 2 sample t test when n = 50 and ypu have paired data?
A: Paired t test is employed in a dataset when the dataset are linked to each other.
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A: Based on the concept, If a hypothesis is true and the difference between the control group and the…
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A: X=275, n=500, p=60%, level of signicance=1%
Q: which of the following study is appropiate for the one sample t test?
A: We know that
Q: The standard error of the sample mean of sample size n from a populatțion with variance o is Vn
A: Answer: For the given question, Proof:
Q: Under what research situation would a researcher use a one-tailed test rather than a two-tailed…
A: A two-tailed test is known to be a test carried out to show if the mean of the sample is…
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Q: Random samples of resting heart rates are taken from two groups. Group 1 exercises regularly, and…
A: Answer Group1: 62,71,62,68,69,69,72Group 2: 78,74,73,76,76,71,70,76n1 =7n2 =8level of significance…
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what is the general alternative hypothesis for a two tailed independent samples t test
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- An I/O psychologist wants to know if there is a difference in worker evaluations depending if the evaluator is a male or female. 15 men and 15 women managers were asked to rate on a scale of 0-10 the same group of worker files. The ratings on the worker evaluations were recorded for each manager. Which statistical test would be best to determine if there is a significant difference between groups? one-sample t-test dependent samples t-test independent samples t-test ANOVACHOOSE ALL THAT APPLY: Which of the following are assumptions of ANOVA? Random sample Independent variable(s) are normally distributed Dependent variable is continuous Dependent variable is discrete Treatment variances are similar Treatment means are similar Dependent variables are normally distributed(Non Parametric Test) Following are the weight gains in pounds of 2 randomly samples of young turkeys fed 2 different diets: Diet 1: 16.3, 10.1, 10.7, 13.5, 14.9, 11.8, 14.3, 10.2, 12.0, 14.7, 23.6, 15.1, 14.5, 18.4, 13.2 & 14.0 Diet 2: 21.3, 23.8, 15.4, 19.6, 12.0, 13.9, 18.8, 19.2, 15.3, 20.1, 14.8, 18.9, 20.7, 21.1, 15.8, & 16.2 Test @ 0.01 level of significance to test Ho that the 2 population sampled are identical against HA that on the average the second diet produces a greater gain in weight.
- Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population 2 does not. The data from these two samples is given below: Population 1: 69, 65, 66, 71, 67, 09, 65 Population 2: 78, 76, 69. 77, 70, 60, 69, 68 Is there evidence, at an a- 0.035 level of significance, to conclude that there those who exercise regularly have lower resting heart rates? (Assume that the popuation variances are equal and that the population distributions are normal) Carry out an appropriate hypothesis test, filing in the information requested. A. The value of the test statistic: Note: For the next part, your answer should use interval notation An answer of the form (-00, a) is expressed (-infty, a), an answer of the fom (6, o0) is expressed (b, intty), and an anawer of the form (-oo, a) U (b, ) is expressed (-inity, aLb, infty. Hint: For example, note that a rujection region of 'reject Ho if t> t," can be expressed as "reject Ho ift belongs to the interval…A different I/O psychologist wants to know if there is a difference in worker evaluations depending if the employee is a male or female. A group of managers were recruited and each rated both 15 men and 15 women employee evaluations on a scale of 0-10. The ratings on the worker evaluations were recorded for each manager. Which statistical test would be best to determine if there is a significant difference between groups? one-sample t-test dependent samples t-test ANOVA
- One-way ANOVA has more assumptions than the independent samples t test. Group of answer choices True FalseRandom samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population 2 does not. The data from these two samples is given below: Population 1: 66, 71, 66, 64, 63, 69, 70 Population 2: 77, 74, 69, 73, 74, 78, 68, 68 Is there evidence, at an a = 0.065 level of significance, to conclude that there those who exercise regularly have lower resting heart rates? Carry out an appropriate hypothesis test, filling in the information requested. A. The value of the standardized test statistic: -4.87322 B. The p-value is .00001 C. Your decision for the hypothesis test: A. Do Not Reject H₁. B. Do Not Reject Ho. C. Reject H₁. OD. Reject Ho.Answer is incorrect
- A significant result in an ANOVA indicates that A)the means of two groups are different, B)there is a significant effect of random variance. C)there is a significant effect of systematic variance. D)the intercept of the regression line is not zero.Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population 2 does not. The data from these two samples is given below: Population 1: 64, 73, 70, 66, 65, 71, 66 Population 2: 76, 78, 73, 74, 69, 68, 73, 73 Is there evidence, at an a = 0.08 level of significance, to conclude that there those who exercise regularly have lower resting heart rates? (Assume that the population variances are equal.) Carry out an appropriate hypothesis test, filling in the information requested. A. The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form (-0, a) is expressed (-infty, a), an answer of the form (b, o0) is expressed (b, infty), and an answer of the form (-00, a) U (b, o0) is expressed (-infty, a)U(b, infty). B. The rejection region for the standardized test statistic: C. The p-value is D. Your decision for the hypothesis test: O A. Do Not Reject H1. OB. Do Not…