variance p value

On an average it was found that 110 out of 400 students of one school and 100 out of 500 students of another school have eye sight problems. If the variances are 60 and 73, find the P - value and verify if the mean number of students with eye sight problems of both the..

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 - n 2 p 2 = n..

= np (p+q) n - 1 ..

According to a traffic survey, the variance of the number of cars crossing traffic junction around noon is 9.6 per hour. Observations by the traffic controller for 25 days indicated the variance as 11.6 per hour. At α = 0.05, find the chi-square test value and ..

In a statistical hypothesis testing for a variance, the test value of chi-square, c 2 = 9.428, degrees of freedom 20, and the test is left tailed. Find the p -value interval for the test. => 0.975 < p -value < 0.99 or 0.01 < p -value < 0..

In a statistical hypothesis testing for a variance , the test value of chi-square, c 2 = 47.831, n = 28 and the test is two tailed. Find the P -value interval for the test. => information is not sufficient or 0.005 < p -value < 0.01 or 0.01 < p ..

What value does P represent? => 6 5 or 1 1 4 or 2 or 2 3..

Find the F-test value for testing the difference between two population variances. The data shows the two samples from each of the populations. => 1.11 or 0.63 or 2.38 or 2.16..

Find the values of P and Q in the parallelogram. => - 4, 3 or 3, 4 or 3, - 4 or 2, 5..

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