A random sample of twenty-five adult citizens of the U. S. were asked to estimate the average income of all U. S. households. The mean estimate as $45,000 and the standard deviation among the estimates was $15,000. Based on this data, find the 95% confidence interval for the mean estimate of the average income.

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.