In a program designed to help patients stop smoking, 198 patients were given sustained care, and 82.3% of them were no longer smoking after one month. Use a 0.10 significance level to test the claim that 80% of patients stop smoking when given sustained care.

Identify the null and alternative hypotheses for this test. Choose the correct answer below.

A.

Upper H 0: pequals0.8

Upper H 1: pless than0.8

B.

Upper H 0: pequals0.8

Upper H 1: pgreater than0.8

C.

Upper H 0: pnot equals0.8

Upper H 1: pequals0.8

D.

Upper H 0: pequals0.8

Upper H 1: pnot equals0.8

Identify the test statistic for this hypothesis test.

The test statistic for this hypothesis test is ...

do i do it on a graph?

step-by-step explanation:

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

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.