Does the mean of the sample proportions equal the proportion of girls in two​ births? A. ​Yes, both the mean of the sample proportions and the population proportion are 1/4. B. ​No, the mean of the sample proportions and the population proportion are not equal. C. ​Yes, both the mean of the sample proportions and the population proportion are 1/3. D. ​Yes, both the mean of the sample proportions and the population proportion are 1/2.

the answer is a

Step-by-step explanation:

.19875994384

step-by-step explanation:

1699/ 8548

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.