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2 years ago

This isn’t urgent, but it’s appreciated if u reply quickly

Mathematics

1 answer:

rjkz [21]2 years ago

7 0

The answer is opposite

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A medical website states that 40% of U.S. adults are registered organ donors. A researcher believes that the proportion is too h

Marat540 [252]

Answer:

P value is 0.1932

conclusion is that find value P greater than hypothesis test at the 0.05 level

Step-by-step explanation:

Given data

registered organ donors P = 40%

sample n = 200

registered organ donors x = 74

hypothesis test α = 0.05

to find out

P-value and state a conclusion

solution

we take a trail p less than 40 % i.e 0.40

so p = x/n

p = 74 / 200 = 0.37

so we find here Z value i.e

Z = p - P / √(PQ/n)

here Q = 1-p = 1-0.40 = 0.60

so Z = 0.37 - 0.40 / √(0.40×0.60/200)

Z = - 0.866

so p value for Z (-0.866) from z table

P value is 0.1932

and conclusion is that find value P greater than hypothesis test at the 0.05 level

6 0

3 years ago

Read 2 more answers

What is the area of the shaded sector

Whitepunk [10]

Answer:

Area = 634.21 square metre

Step-by-step explanation:

Area of shaded region = Area of the circle - Area of the sector

$Area \ of \ the \ circle = \pi r^2 = 225 \pi\\\\Area \ of \ the \ sector = \pi r^2 \frac{ \theta}{360} = \pi \times 225 \times \frac{37}{360}$

$Area \ of \ shaded \ region = 225 \pi - (225 \pi \times \frac{37}{360})$

$= 225 \pi (1 - \frac{37}{360})\\\\= 225 \pi \times 0.89722\\\\=634.21 m^2$

7 0

2 years ago

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Look at the following function <br> X -12 -8

Julli [10]

X-12 -8
calculate the difference
X-20

6 0

2 years ago

Find the y-intercept of the equation. y=-3•7^x

Lorico [155]

Answer:

The y intercept is (0,-3)

7 0

2 years ago

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Write the equation of the line that passes through the points (3, 7) and (-1, 2)

nasty-shy [4]

Answer:

$y = \frac{5}{4} x + 3 \frac{1}{4}$

Step-by-step explanation:

The equation of a line is usually written in the form of y=mx+c, where m is the gradient and c is the y-intercept.

Let's find the gradient of the line, m, first.

Gradient= $\frac{y1 - y2}{x1 - x2}$

$m = \frac{7 - 2}{3 - ( - 1)} \\ m = \frac{5}{3 + 1} \\ m = \frac{5}{4}$

$y = \frac{5}{4} x + c$

To find the value of c, substitute a coordinate.

when x= -1, y= 2,

$2 = \frac{5}{4} ( - 1) + c \\ c = 2 + \frac{5}{4} \\ c = 3 \frac{1}{4}$

Thus, the equation of the line is

$y = \frac{5}{4} x + 3 \frac{1}{4}$

7 0

3 years ago