right-tailed test about population variance o2, where n = 18 and a = 0.01 (10)
Find the critical value(s) for a right-tailed test for a population variance, sample size n = 12, and level of significance α-o025. The critical value(s) is(are) (Use a comma to separate answers as needed. Round to three decimal places as needed.)
Using Table G, o2 = 225, a = 0.10, n = 22, and a right-tailed test, find the following: Part 1 State the hypotheses. H: 0 225 H]:o 225 This hypothesis test is a one-tailed test. Part 2 out of 4 Find the critical value. Round the answer to three decimal places. Critical value is
c. Find the critical t value(s) for ? .10 with n-18 for a two-tailed t test. 7. An instructor wishes to see whether the variation is scores of the 23 students in her class is less than the variance of the population. The variance of the class is 198. Is there enough evidence to support the claim that the variation of the students is less than the population variance (?2 225) at ? .05? Assume that the scores are normally...
2= Determine the critical value for a right-tailed test regarding a population at the al = 0.05 Hovei of significance. round to two decimal plaus) Determine the critical values for a two-tailed test of a population mean at the d= 0.05 level of significance based on a sample size of N= 19. a) ± 1.74 c)+ 7.101 b) J1 d) ± 1.734 Find the standardized test Statistiet for a sample with N=12, X= 34.2, S = 2.2, and a= 0.01...
Find the critical value for a right-tailed test with alpha equals 0.01, degrees of freedom in the n=12, and degrees of freedom in the degrees of freedom=50.
(a) Determine the critical value(s) for a right-tailed test of a population mean at the α=0.05 level of significance with 10 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the alphaαequals=0.01level of significance based on a sample size of n=20. (c) Determine the critical value(s) for a two-tailed test of a population mean at the α =0.10 level of significance based on a sample size of n=16.
Complete parts (a) through (c) below (a) Determine the critical value(s) for a right-tailed test of a population mean at the ?-0.05 level of significance with 10 degrees of freedom (b Determine the critical value(s) for a left-tailed test of a population mean at the ? 0 01 level of significance based on a sample size of n-15 c) Determine the critical value(s) for a two-tailed test of a population mean at the ?:0.01 level of significance based on a...
9. Find the critical value of a right tailed t-test where n and.05. 12 10. What would the decision be if the test value was 1.48 and the critical value was 1.22? 11. What is the symbol for a type I error? 12. When the sample standard deviation is known which of the following tests it used? T-test or z-test
Let Yı, Y2, ..., Yn iid N (4,02), where the population mean and population variance o2 are both unknown. Show that the Method of Moments (MOM) estimators of u and o2 are given by n û =Ý ΣΥ, n i=1 п n - - 1 ô2 - = s2 Ü(Y; – 7) n п i=1 Note: In this case, (Y, S2) is a sufficient statistic for (u, 02). The MOM estimators of u and o2 are therefore functions of a...
Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at the a = 0.01 level of significance with 15 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the a = 0.05 level of significance based on a sample size of n = 20. (c) Determine the critical value(s) for a two-tailed test of a population mean at the a=0.10 level of...