Asimple random sample (srs) of 100 of a certain popular car in 1997 found that 20 had a certain minor defect in the brakes. an srs of 400 of the same car in 1998 found that 50 had the minor defect in the brakes. let p1 and p2 be the proportion of all cars of this model in 1997 and 1998, respectively, that contained the defect. a 90% confidence interval for p1−p2 is:

The required interval is (0.679, 0.821).

Step-by-step explanation:

Since we have given that

So, the proportions would be

So, At 90% confidence interval, the z score value would be

z = 1.65

and the hypothesis are :

So, the 90% confidence interval would be

Hence, the required interval is (0.679, 0.821).

it would to have a graph or something ! but i had this question so its false

step-by-step explanation:

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.