Consider the following hypothesis test:
h0:   u  u is less than or equal to 50
ha: u > 50
a sample of 60 is used and the population standard deviation is 8. use the critical value approach to state your conclusion for each of the following sample results. use = .05.
a. with  ? ?   x = 52.5, what is the value of the test statistic (to 2 decimals)?
can it be concluded that the population mean is greater than 50?
b. with  ? x?   = 51, what is the value of the test statistic (to 2 decimals)?
can it be concluded that the population mean is greater than 50?
c. with  ? x?   = 51.8, what is the value of the test statistic (to 2 decimals)?

i dont understand the question? ?

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

answer: integers are just whole numbers: positive, negative, and zero.

i = {-∞, -2, -1, 0, 1, 2, 3, ∞}

let x = 1st integer

let y = 2nd integer

x = 3y + 17   {equation 1}

xy = -24         {equation 2}

substitute 3y+17 in place of x n equation 2

and solve for y.

(3y+17)y = -24

3y2 + 17y = -24

3y2 + 17y + 24 = 0

from quadratic equation:

y = [-17±√(172-4(3)(24))]/(2(3))

y = (-17 ±√1)/6

y = (-17+1)/6   or     y = (-17-1)/6

y = -16/6           or     y = -18/6

y = -2 2/3         or   y = -3

since we are dealing with

y = -3

x = 3y+17 = -9+17 = 8

the integers are -3, 8

step-by-step explanation:

step-by-step explanation:

a bicycle manufacturer uses the given expression to model the monthly profit from sales of a new model of bicycle, where x is the selling price of one bicycle, in dollars.