sum of chi square distributions

A chi-square variable cannot be _____, and the distributions are _____ skewed. => positive ; negatively or 0 ; positively or 1 ; negatively or negative ; positively..

At what degrees of freedom, the chi-square distribution becomes symmetric? => 90 or 1 or 100 or 50..

Find the sum of the number of sides of a triangle and those of a square. => 5 or 8 or 9 or 7..

The perimeter of a right triangle is 108 cm and the sum of the squares of its sides is 4050 sq.cm. Find the length of the smallest side. => 36 cm or 44.36 cm or 75 / 2 cm or 27 cm..

For any parallelogram, find the ratio of sum of the squares of the lengths of the diagonals to the sum of the squares of the lengths of two adjacent sides. => 1 2 or 3 or 1 or 2..

For any parallelogram, find the ratio of sum of the squares of the lengths of the diagonals to the sum of the squares of the lengths of two adjacent sides. => 3 or 2 or 1 or 1 2..

In a report, the standard deviation of the weights of male student athletes is stated as 2 pounds. The standard deviation of weight of a random sample of 24 male student athletes was found as 1.9 pounds. Find the chi-square test value. At α = 0.01 is there enough evidence to support..

The standard deviation of the annual income of a random sample of 20 doctors in U.S. having one to two years experience is $5900. Test the hypothesis that the standard deviation of the population is more than $5,400 a year at α = 0.05. Also write the chi-square test value. [Assume t..

Probability distribution for getting a sum X when two dice are rolled is represented by _____ . => Figure 1 or Figure 2 or Figure 3 or Figure 4..

The sum of the squares of the third and fifth of five consecutive positive even integers is 208. What are the numbers? => 4, 6, 8, 10 and 12 or 2, 4, 6, 8 and 10 or 2, 6, 8, 10 and 12..