Mathematics, 05.12.2019 22:31 amison64

People say that coke and pepsi taste different, but are they really that different? a researcher randomly samples people and has each do a blind taste-test to see if they can really identify which of two drinks they taste is coke and which is pepsi. the researcher will look at the proportion of the random sample that correctly identifies coke and peps in order to come to a conclusion.

a. if the researcher samples 40 people and uses a null hypothesis of p0 = .5, can the researcher carry out a valid 1-sample proportion test?

b. if the researcher samples 10 people and uses a null hypothesis of p0 = .5, can the researcher carry out valid a 1-sample proportion test?

c. if the researcher samples 20 people and uses a null hypothesis of p0 = .9, can the researcher carry out a valid 1-sample proportion test?

d. if the researcher samples 100 people and uses a null hypothesis of of p0 = .9, can the researcher carry out a valid 1-sample proportion test?

e. if you use a null hypothesis of p = .05, what is the smallest sample size you can use to carry out a valid 1-sample proportions test?

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 21:30

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

Answers: 1

Answer

Mathematics, 21.06.2019 23:10

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?

Answers: 2

Answer

Mathematics, 21.06.2019 23:20

Identify the function that contains the data in the following table: x -2 0 2 3 5 f(x) 5 3 1 2 4 possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1

Answers: 1

Answer

Mathematics, 22.06.2019 00:30

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

Answers: 2

Answer

You know the right answer?

People say that coke and pepsi taste different, but are they really that different? a researcher ra...

Questions