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3 years ago

13

Suppose you wish to perform a hypothesis test for a population mean. suppose that the population standard diviation is unknown,

the population is skwed to the right and the sample is large. woudl you perform a z test or a t test

1 answer:

Elenna [48]3 years ago

7 0

You would Perform a z test

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Find the equation of the straight line passing through the points (4; 2) and (2; 4).

Alecsey [184]

Use point-slope form.

But first let's find the slope.

(4, 2), (2, 4)

m = y2-y1/x2-x1

m = (4 - 2)/(2 - 4)

m = 2/-2

m = -1

So this is the slope, now we can plug this into the equation along with any point.

y - y1 = m(x - x1)

Where y1 is the y-value of the point, x1 is the x-value, and 'm' is the slope.

Let's plug in point (4, 2):

y - 2 = -1(x - 4)

This can be one of your options.

Distribute -1:

y - 2 = -x + 4

Add 2 to both sides:

y = -x + 6

This can be another of your options.

Add 'x' to both sides:

x + y = 6

This can be another of your options.

8 0

3 years ago

Read 2 more answers

Andy, Brenda and Carla are running a race. in how many different ways can the students finish in first, second and third place

Bingel [31]

Let's call them A B and C.

ABC
ACB
BAC
BCA
CAB
CBA

so there's 6 different ways

7 0

3 years ago

Solve x:<br> 6 - x/2 = 10<br> --Please Help! Maths Homework Due In For Monday! Xx

ratelena [41]

$6 - \frac{x}{2}= 10$ Subtract 6 on both sides

$6-\frac{x}{2}-6=10-6$

$-\frac{x}{2}= 4$

Multiply -2 on both sides to get "x" by itself

$-\frac{x}{2} (-2) = 4(-2)$

x = -8

4 0

3 years ago

Read 2 more answers

In parallelogram RSWY, find m

LuckyWell [14K]

Answer:

Part A) $m\angle R=110^o$

Part B) $m\angle S=70^o$

Step-by-step explanation:

we know that

In a parallelogram, opposite angles are congruent and consecutive angles are supplementary

step 1

Find the value of x

we know that

$m\angle R=m\angle W$ ----> by definition of parallelogram (opposite angles are congruent)

substitute the given values

$(5x-90)^o=(2x+30)^o$

solve for x

$5x-2x=30+90\\3x=120\\x=40^o$

step 2

Find the measure of angle R

$m\angle R=(5x-90)^o$

substitute the value of x

$m\angle R=(5(40)-90)=110^o$

step 3

Find the measure of angle S

we know that

$m\angle R+m\angle S=180^o$ ---> by definition of parallelogram (consecutive angles are supplementary)

we have

$m\angle R=110^o$

substitute

$110^o+m\angle S=180^o$

$m\angle S=180^o-110^o$

$m\angle S=70^o$

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3 years ago

(Directions at the top of the picture)

enyata [817]

To factor polynomials, find a common number to remove and leave the rest in parentheses. I did the odds, now you try the evens. If you still need help,, let me know.

1. 3 (x+4)
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7. 3d (7c -1)
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3 years ago