It should be 2,736? I think? I multiplied the fourth graders number x 4 and that’s what I got, I hope it’s correct!
Can you explained the triangle. bad pic
Since there is no mean, we need to first get the probability:
p = 11/ 65 = 0.1692
This will make it easier to compute for the interval estimate. Interval Estimate = probability ± margin of error
upper limit = 0.1692 + 0.025 = 0.1942
lower limit = 0.1692 - 0.025 = 0.1442
So the interval estimate is 0.1442 < x < 0.1942
Hamid's normal weight is 80 kg.