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Simora [160]
3 years ago
15

A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. Assume that the distr

ibutions follow the normal probability distribution and the population standard deviations are equal. The information is summarized below. Statistic Men Women Sample mean 24.44 22.44 Sample standard deviation 5.52 4.63 Sample size 35 40 At the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month?1. Compute the value of the test statistic. Value of the test statistic 2. What is your decision regarding on null hypothesis? The decision is the null hypothesis that the means are the same. 3. What is the p-value?
Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

Answer:hiiiiiiiii

Step-by-step explanation:

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sergeinik [125]
2x-6=12
+6 +6
2x=18
/2. /2

X=9

The answer is B
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3 years ago
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B is the midpoint of AC and E' is the midpoint of BD. If A(-9,-4), C(-1, 6), and E(-4,-3), find the coordinates of D.
Ipatiy [6.2K]
The coordinates for D are (-4, -7)

First we must locate point B as it is vital to finding the midpoint of BD. To do this, we take the average of the endpoints AC since B is its midpoint. 

x values = -9 + 1 = -8
Then divide by 2 for the average -8/2 = -4

y values = -4 + 6 = 2
Then divide by 2 for the average 2/2 = 1

Therefore B must be (-4, 1)

Now we know the values of E must be the average of B and D. So we can write equations for each coordinate since we know they are averages. 

x - values = (Bx + Dx)/2 = Ex
(-4 + Dx)/2 = -4 ---> multiply both sides by 2
-4 + Dx = -8 ---> add -4 to both sides
Dx = -4

y - values = (By + Dy)/2 = Ey
(1 + Dy)/2 = -3 ---> multiply both sides by 2
1 + Dy = -6 ---> subtract 1 from both side
Dy = -7

So the coordinates for D must be (-4, -7)
5 0
3 years ago
Read 2 more answers
I need help. I suck at Geometry
Temka [501]

Answer:

25

Step-by-step explanation:

We can use the Pythagorean theorem to fin x

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

7^2 + 24^2 = x^2

49+ 576 = x^2

625 = x^2

Take the square root of each side

sqrt( 625) = sqrt(x^2)

25 = x

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3 years ago
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Sovle for X. Please.
Sati [7]
Answer:
RP: x equals 0
JH: x equals -11
EG: x equals 9
5 0
3 years ago
PLEASE HURRY WILL GIVE BRAINLIEST <br> What is the solution of
ANTONII [103]

Answer:

  • Option A

Step-by-step explanation:

<u>Find zeros first:</u>

  • x² + x - 6 = x² + 3x - 2x - 6 = x(x + 3) - 2(x + 3) = (x - 2)(x + 3)
  • x = 2, x = -3, x = 7 (but x ≠ 7 as no division by zero)

<u>We have 4 intervals:</u>

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  • -3 ≤ x ≤ 2, two negatives and one positive, the result is positive or zero
  • 2 ≤ x < 7, two positives and one negative, the result is negative or zero
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<u>The solution is:</u>

  • x ≤ - 3 or 2 ≤ x < 7

Correct choice is A

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