Mathematics
Mathematics, 22.07.2021 16:40, DraeDrae138

25 scores from all of the students who took the test. She sees that the mean score is 134 with a standard deviation of 6.0547. The superintendant wants to know if the standard deviation has changed this year. Previously, the population standard deviation was 13. Is there evidence that the standard deviation of test scores has decreas

answer
Answers: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 17:30, Lovergirl13
Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?
Answers: 3
image
Mathematics, 21.06.2019 18:00, julliette27
What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube
Answers: 3
image
Mathematics, 21.06.2019 19:00, godchaux15395
What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)
Answers: 2
image
Mathematics, 21.06.2019 19:10, LindaCat78
What is the anwers for 9+2x=5x-3-x
Answers: 2
Do you know the correct answer?
25 scores from all of the students who took the test. She sees that the mean score is 134 with a sta...

Questions in other subjects:

Konu
Mathematics, 05.02.2021 02:20
Konu
English, 05.02.2021 02:20
Konu
Mathematics, 05.02.2021 02:20