A random sample of 436 mothers in the United States found that their average age at first birth was 25.9 with a standard deviation of 4.5. A random sample of 364 mothers in France found that their average age at first birth was 28.6 with a standard deviation of 9.5. We will be testing if the mothers give birth to their first birth in the United States are at younger ages than those in France. Required:
Calculate the degrees of freedom for this hypothesis test.

Degree of freedom = 798

Step-by-step explanation:

Given that,

First random sample, n₁ = 436

Second random sample, n₂ = 364

So,

Degree of freedom = n₁ + n₂ - 2

                                = 436 + 364 - 2

                                = 798

⇒Degree of freedom = 798

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )