What is the interval estimate of the true population proportion?

The range of sample proportion = 0.80 - 0.62  =0.18

range = 0.18 / 3 = 0.06

0.78 + 0.06 =0.84
0.78 - 0.06 = 0.72

Answer (0.72,0.84)

Look at this and see if it

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)