please answer both thanx

In a hypothesis test for the population variance, the hypotheses are Ho: 02 = 175 Ha: 02 a: 175 If the sample size is 25 and the test is being carried out at the 5% level of significance, the rejection region will be: 0 X234.3816 o X233.1963 o X2 39.3641 Which statements are True? 1. Exact shape of the F distribution is determined by two numbers of degrees of freedom. 2. Degrees of freedom for the numerator in F distribution can be larger, smaller, or equal to the degrees of freedom for the denominator. 3. The equal-variances test statistic of H1 - /2 is Student t distributed with 1 + 2 degrees of freedom, provided that the two populations are normal. 4. Degrees of freedom for the denominator in F are always smaller than the degrees of freedom for the numerator