Batrachochytrium dendrobatidis (Bd for short) is a fungal pathogen that has devastated many amphibian populations. In Gamboa, scientists have been tracking the prevalence of the disease. In a 2012 sample of 205 frogs, 26 were infected. In 2014 sample of 84 frag frogs, 22 were infected. Assume these samples represent random samples of the Gamboa population of frogs in 2012 and 2014 . A) Construct and interpret a 95% confidence interval for the true difference in the proportion of frogs infected in Gamboa in 2012 and 2014

B) Does your interval give statistically convincing evidence the proportion of frogs infected in Gamboa change from 2012 to 2014? Explain

i think it might be a but you might want a second opinion

step-by-step explanation:

the answer is 89 d

i took the test

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2

hello!

to begin with, we're given that on earth, a rock weighs 20 pounds, and while on jupiter, that same rock weighs 42 pounds. now, we're trying to find the weight of a rock that weighs 10.5 pounds on earth, on jupiter.

to solve this, first, set up a proportion, cross-multiply, and solve it algebraically.

setting up the proportion is the hardest and the most confusing part of the problem, but it's simple.

if on earth, the rock weighs 20 lbs, and on jupiter it weighs 42 lbs, our first part of our proportion is 20/42 lbs. the second part has to be equal to each other. this means that 10.5 has to be on the numerator of the fraction, and x, the value we're trying to find, has to be on the denominator. remember that the rock weighs 10.5 lbs on earth, and we're trying to find the weight of it on jupiter (which is x).

20/42 = 10.5/x

next, you would cross-multiply.

20x = 42(10.5)

20x = 441

now, solve it algebraically by using division.

x = 22.05 lbs

this can be rounded to 22.1 lbs.

therefore, the weight of the rock on jupiter is 22.1 lbs, the fourth choice.