Mathematics, 02.12.2019 19:31, jackkkkk32

Adry-cleaning establishment claims that a new spot remover will remove more than 70% of the spots to which it is applied. to check this claim, the spot remover will be used on 12 spots chosen at random. if fewer than 11 of the spots are removed, we shall not reject the null hypothesis that p = 0.7. use is information to answer the following 3 problems

a. what is the alternative hypothesis?

b. is this a two sided or one-sided hypothesis test?

after this study, the dry-cleaning establishment finds that the new spot remover removes on average of 10.5 spots out of the 12 spots. a subsequent scientific study determines that this new spot remover removes 70% of the spots to which it is applied. did the cleaning establishment make any error?

a. yes, type ii error

b. no error

c. yes, type i error

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:00, dayanawhite64

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Answers: 2

continue

Mathematics, 22.06.2019 01:20, katherinevandehei

Construct a box plot to represent the ages of the actors in a play. step 1: arrange the numbers in order from lowest (on the left) to highest. 24 18 30 26 24 33 32 44 25 28

Answers: 3

continue

Mathematics, 22.06.2019 04:30, arthurdolz

The westins and the shermans live in the same city and pay the same sales tax rate, and both families made $14,000 in taxable purchases last year. if the westins made $86,000 and the shermans made $33,000 last year, is the sales tax in their city an example of a regressive tax? yes, because the westins and the shermans both paid the same sales tax rate. b. no, because the shermans paid a higher percentage of their income in sales tax than the westins did. c. no, because the westins and the shermans both paid the same sales tax rate. d. yes, because the shermans paid a higher percentage of their income in sales tax than the westins did.

Answers: 1

continue

Mathematics, 22.06.2019 04:30, samsamisam4951

Arectangular garden measures 5m by 7m. both dimensions are to be extended by the same amount so that the area of the garden is doubled. by how much should the dimensions increase, to the nearest tenth of a metre?

Answers: 2

continue

Do you know the correct answer?

Adry-cleaning establishment claims that a new spot remover will remove more than 70% of the spots to...