What distribution is used to calculate the p-value in the one-sample Chi-square-test for the variance? (choose one answer)
Solution :-
The chi square test for variance is nonparametric statistical procedure with chi square distribution.
So , we can said that chi square distribution is used to calculate the p value in the one sample chi square test for the variance.
Answer :- option a - chi square distribution.
What distribution is used to calculate the p-value in the one-sample Chi-square-test for the variance? (choose...
When Chi-square distribution is used as a test of independence, the number of degrees of freedom is related to both the number of rows and the number of columns in the contingency table. Select one: True False Question 2 Answer saved Points out of 1.000 Flag question Question text A goodness of fit test can be used to determine if membership in categories of one variable is different as a function of membership in the categories of a second variable...
How is the chi-square test used to analyze genetic crosses? What does the probability (p-value) associated with a chi-square value indicate about the result of a cross?
Consider the observed frequency distribution for the set of random variables. a. Perform a chi-square test using alpha=0.05 to determine if the observed frequencies follow the binomial probability distribution when p=0.50 and n=4. b. Determine the p-value and interpret its meaning. Random Variable, X Frequency, Fo 0 29 1 96 2 151 3 96 4 28 Total 400 The chi-square test statistic is chi squared, χ2=______ p-value=______
A chi-square test for goodness of fit is used to examine the distribution of individuals across three categories, and a chi-square test for independence is used to examine the distribution of individuals in a 2×3 matrix of categories. Which test has the larger value for df? a. The test for independence b. Both tests have the same df . c. The df value depends on the sizes of the samples that are used. d. The test for goodness of fit
Problem 4 (20 points). Show how to use the chi-square distribution to calculate P(a < S2 < b), where S,: nii Σί! from N(μ, σ2) (Xi - X)2 is the sample variance of a random sample Xi,.. . ,Xn
A distribution and the observed frequencies of the values of a variable from a simple random sample of the population are provided below. Use the chi-square goodness-of-fit test to decide, at the specified significance level, whether the distribution of the variable differs from the given distribution Distribution: 0.1875, 0.1875, Observed frequencies: 16, 20, 24, 36 Significance level 0.05 0.3125, 0.3125 Determine the null and alternative hypotheses. Choose the correct answer below. OA. H: The distribution of the variable differs from...
The chi-square goodness of fit test can be used when: Select one: a. We conduct a multinomial experiment. b. We perform a hypothesis test to determine if a population has a normal distribution. c. We perform a hypothesis test to determine if two population variances significantly differ from each other. d. We conduct a binomial experiment. The x statistic from a contingency table with 6 rows and five columns will have Select one: a. 24 degrees of freedom b. 50...
The type of test Statisitic (choose one) options consist of Z , t , chi square , F . If you don’t mind giving that answer as well. Thank you! -Quiz 6: Chapters 8, 11 I 2018 Time Remaining 1:1121 A hospital claims that the proportion, p, of full-term bøbies born in this hospital, 69 weighed Perform a two-tailed test. Then fill in the table below Carry your intermediate computations to at least three decimal places and round your answers...
Compute the test statistic and state the test result. Compute a p-value 8.117 Trading skills of institutional investors. The Journal of Finance (Apr. 2011) published the results of an analysis of trading skills of institutional investors. The study focused on "round-trip" trades, i.e., trades in which the same stock was both bought and sold in the same quarter. In a ran- dom sample of 200 round-trip trades made by institutional investors, the sample standard deviation of the rates of return...
LU 22 2. We know that the sample variance follows a chi-square distribution: Sanx?(n-1). (a) (5 points) Use this fact to show that E(S) = 02. (Hint: Find the mean of the x as then mean of a Gamma distribution.) (b) (5 points) Use Markov's inequality to find an upper bound on the probability that the sample variance is twice the true variance, i.e. P(S? > 20%).