find the f test value for testing the variances of two populations. the sample variances from those populations are 2 = 15

Find the F-test value for testing the variances of two populations. The sample variances from those populations are s 1 2 = 15, s 2 2 = 28. => 1.87 or 0.53 or ..

If the degrees of freedom of the numerator is 15 and that of the denominator is 24 for testing the variances of two populations using F-test, then find the test value and the critical value at 95% co..

Check whether the population variances differ significantly at 90% confidence. Also find out F-test value. The data relating to two samples from those populations are shown in the table. Sample size Sampl..

A population consists of the five numbers 1, 3, 5, 7 and 9. Consider all the samples of size 2 that can be drawn without replacement from the population. Find the mean and the variance of the sampling distribution means. => 6 and..

Which of the following are the assumptions for two-way ANOVA? I. All samples are drawn from normally distributed populations. II. All populations have a common variance. III. The groups must be equal in sample size. IV. Within each group, ..

We have = n(n-1) p 2 (p+q) n - 2 + np = n 2 p 2 - np 2 + np = n 2 p 2 + np(1-p) = n 2 p 2 + npq Now V(x) = E(x 2 ) - [E(x)] 2 = n 2 p 2 + npq - ..

In a statistical hypothesis test, s 2 is the sample variance, s 2 the population variance and n the sample size, than the formula for the chi-square test for a single variance is: => n s 2 ..

Two populations have means of 29.5 and 28 and variances of 6 and 7.8. If the sizes are 30 and 43, then find the z score values. Verify whether the mean of the first population is greater than that of the other at 99% of confidence or not. ..

A Math professor claims that the variance of the number of students attending his guest lectures in two universities do not differ. The variance of the number of students attending 15 guest lectures in a university is 96 and 20 lectures in another university ..

The growth of population is measured as increase in its size over a period of time and populations show characteristic patterns of growth with time. These patterns are known as population growth forms. In S - shaped or sigmoid growth the population show an in..