Mathematics, 30.10.2021 07:40, autumnmeadows20

A professor at NCSU wants to test if the elementary school children spend less than 30 minutes per day on homework. The test is to be made at the 1% significance level. A sample of 64 children selected from this school showed that they spend an average of 25.6 minutes per day on home work with a standard deviation of 4 minutes. What is the critical value of z

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:00, heysonic91

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Answers: 1

continue

Mathematics, 21.06.2019 20:10, Maddi7328

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Answers: 1

continue

Mathematics, 21.06.2019 21:00, alexahrnandez4678

Rewrite the following quadratic functions in intercept or factored form. show your work. f(t) = 20t^2 + 14t - 12

Answers: 1

continue

Mathematics, 21.06.2019 21:00, 22MadisonT

Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75

Answers: 2

continue

Do you know the correct answer?

A professor at NCSU wants to test if the elementary school children spend less than 30 minutes per d...