What would the critical value be for a Chi-Square test with degree of freedom = 5and and alpha level of a 0.05?-11.072.0151.14512.832.5710.8312

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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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6.53 What’s wrong? Here are several situations where there is an incorrect application of the ideas presented in this section. Write a short paragraph explaining what is wrong in each situation and why it is wrong. (d) The z test statistic is equal to 0.018. Because this is less than α = 0.05, the null hypothesis was rejected.
A researcher wants to test the association between number of speeding tickets issued and type of car model. A 4 x 5 contingency table was developed and the Chi-square value computed was 15.42. At the 0.05 level, the researcher should conclude that with a critical value of _____, speeding and car model are _____. 21.026; independent 23.337; dependent 31.410; independent 34.170; dependent
a. What is the degree of freedom and critical value for the test (alpha=0.05)? b. If the chi-square statistic is 6.67, what is your conclusion?
I'm interested in comparing the GPA of students at a junior college where I teach, with the national GPA average of all junior college students. I randomly select 22 students from my school (N = 22) and compare the mean of the 22 students with the national average. When I compare the two means I end up with a t-value of 2.761. Using an alpha value of .01, for a two-tailed test, what critical value do I find in Appendix B? (answer must have 3 decimal places)
If your p-value is 0.002, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.15, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.031, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.071, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 8.7×10−58.7×10-5 (which may show on computers as 8.7 E -5), what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.0061, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value…
We tested to see if women were more likely to do aerobics than men at the α = 0.02 level, and found a p-value of 0.0017. Which of the following is a correct interpretation? With an α of 0.02, and a p-value of 0.0017, we reject the null and state that the averages are different With an α of 0.02, and a p-value of 0.0017, we reject the null and state that the true average of women who do aerobics is greater than that of men With an α of 0.02, and a p-value of 0.0017, we reject the null and state that the true proportion of women who do aerobics is greater than that of men With an α of 0.05, and a p-value of 0.0.0017, we reject the null and state that the true proportion of women who do aerobics is greater than that of men
18.40 (EX) Magnets for pain relief 1/5: A randomized, double-blind experiment studied whether magnetic fields applied over a painful area can reduce pain intensity. The subjects were 50 volunteers with postpolio syndrome who reported muscular or arthritic pain. The pain level when pressing a painful area was graded subjectively on a scale from 0 to 10 (0 is no pain, 10 is maximum pain). Patients were randomly assigned to wear either a magnetic device or a placebo device over the painful area for 45 minutes. Here is a summary of the pain scores for this experiment, expressed as means ± standard deviations: Magnetic device Place device (n=29) (n=21) Pretreatment 9.6 ± 0.7 9.5 ± 0.8 Posttreatment 4.4 ± 3.1 8.4 ± 1.8 1.1 ± 1.6 Change 5.2 + 3.2 Is there good evidence that the magnetic device is better than a placebo equivalent at reducing pain? Let μ₁ and μ₂ be the mean change in pain for patients given the magnetic device or the placebo device, respectively. State hypotheses for the…
A one-sample t test of Ho: u= 125 against Ha: µ> 125 is carried out based on sample data from a Normal population. The SRS of size n and s = 12.6. What is the P-value of the test in this situation? 15 produced a mean of x = 132.8 A) P= 0.008 B) P> 0.02 C) 0.02
If your p-value is 0.0019, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.49, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.041, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.078, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 2.6×10−102.6×10-10 (which may show on computers as 2.6 E -10), what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your p-value is 0.0061, what is the most significant alpha level? There is no 'most significant alpha level' 0.1 0.05 0.01 0.005 0.001 0.0005 0.0001 If your…
Calculate the test-statistic, t with the following information for a Two Independent Samples t Test with Ha:μ1-μ2≠0. Be sure to first determine if you need to pool or not.n1=60, ¯x1=2.53, s1=0.53n2=50, ¯x2=2.69, s2=0.96Round to 3 decimal places. t =__________ It is pool or not?________
Historically it is known thatp = 36.3% of the population have a specified characteristic. A random sample of size n=500 is taken, and x=167 number of the population has the specified characteristic. Determine the value of the test statistic for the hypothesis test of one proportion with null hypothesis Ho: p = 36.3%. Enter your answer to two decimal places.
You wish to test the following claim (Ha) at a significance level of a = 0.10. H.: µ1 – µ2 = 0 Ha: µ1 – µ2 > 0 You obtain a sample of size nị the first population. You obtain a sample of size of s2 = 54.9 and a standard deviation of s1 = 78 with a mean of 2 65 with a mean of x1 17.1 from 46.7 and a standard deviation n2 7.2 from the second population. You will need to determine whether or not to pool so you will use the correct df. What is the critical value for this test? Report answer accurate to three decimal places. critical value

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What would the critical value be for a Chi-Square test with degree of freedom = 5 and and alpha level of a = 0.05? 11.07 2.015 1.145 12.83 2.571