Mathematics, 31.03.2020 03:06 ethannila

A) Determine the critical value(s) for a right-tailed test of a population mean at the a =0.10 level of significance with 15 degrees of freedom
b) Determine the critical value(s) for a left-tailed test of a population mean at the a=0.10 level of significance based on a sample size of n=10
c)Determine the critical value(s) for a two-tailed test of a population mean at the a=0.01 level of significance based on a sample size of n=13

Answers: 2

Show answers

Answers

Answer from: zacharoo10

a) df = n-1= 15-1= 14

The value of $\alpha=0.1$ and we are conducting a right tailed test, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=T.INV(1-0.1,14)".And we see that

$t_{\alpha/2}=1.345$

b) df = n-1= 10-1= 9

The value of $\alpha=0.1$ and we are conducting a left tailed test, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=T.INV(0.1,9)".And we see that

$t_{\alpha/2}=-1.383$

c) df = n-1= 13-1= 12

The value of $\alpha=0.01$ and we are conducting a two tailed test, the value of $\alpha/2 = 0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,12)".And we see that

$t_{\alpha/2}=\pm 3.505$

Step-by-step explanation:

Part a

We need to find the degrees of freedom given by:

df = n-1= 15-1= 14

$t_{\alpha/2}=1.345$

Part b

We need to find the degrees of freedom given by:

df = n-1= 10-1= 9

$t_{\alpha/2}=-1.383$

Part c

We need to find the degrees of freedom given by:

df = n-1= 13-1= 12

$t_{\alpha/2}=\pm 3.505$

Answer from: Quest

i think it is 18

step-by-step explanation:

If y varies directly as x, and y is 180b when x is n when x is 5, what is the value of n?

Answer from: Quest

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

cretdit to source

Another question on Mathematics

Mathematics, 21.06.2019 15:00

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Answers: 2

Answer

Mathematics, 21.06.2019 20:20

Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. identify the domain for each of the given functions.

Answers: 1

Answer

Mathematics, 22.06.2019 00:00

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle?

Answers: 1

Answer

Mathematics, 22.06.2019 01:20

Write 5 in the form of a/b using integers to show it as a rational number

Answers: 1

Answer

You know the right answer?

A) Determine the critical value(s) for a right-tailed test of a population mean at the a =0.10 level...

Questions

Mathematics, 03.08.2019 17:30

The number of cars in the yard is three times as high as the number of mopeds. the number of bicycles is twice as high as the number of cars. the tota...