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3 years ago

Ax? + bx + c

Mathematics

1 answer:

Andrew [12]3 years ago

3 0

Answer:

I didn't understood what are you trying to say

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A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a samp

fenix001 [56]

Answer:

The lower bound of a 99% C.I for the proportion of defectives = 0.422

Step-by-step explanation:

From the given information:

The point estimate = sample proportion $\hat p$

$\hat p = \dfrac{x}{n}$

$\hat p = \dfrac{55}{100}$

$\hat p$ = 0.55

At Confidence interval of 99%, the level of significance = 1 - 0.99

= 0.01

$Z_{\alpha/2} =Z_{0.01/2} \\ \\ = Z_{0.005} = 2.576$

Then the margin of error $E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1-\hat p)}{n}}$

$E = 2.576 \times \sqrt{\dfrac{0.55(1-0.55)}{100}}$

$E = 2.576 \times \sqrt{\dfrac{0.2475}{100}}$

$E = 2.576 \times0.04975$

E = 0.128156

E ≅ 0.128

At 99% C.I for the population proportion p is: $\hat p - E$

= 0.55 - 0.128

= 0.422

Thus, the lower bound of a 99% C.I for the proportion of defectives = 0.422

6 0

2 years ago

PLEASE HELP ASAP! Will give BRAINLIEST! Please answer correctly!<br> No guessing!

amm1812

Answer: f(x)=567(1/3)^x

Step-by-step explanation:

At x = 0 y = 567

at x = 1 y = 567 - 567(1/3)

at x = 2 y = 567 - 567(1/3)(1/3)

at x = 3 y = 567 - 567(1/3)(1/3)(1/3

7 0

3 years ago

How do you work out the volume of a cube

Inga [223]

Answer:

V=a cubed

Step-by-step explanation:

6 0

3 years ago

Find the midpoint of the segment with the given endpoints (4, -10) , (9, -2)

frutty [35]

midpoint = ( $\frac{13}{2}$ , - 6 )

using the midpoint formula

midpoint = [ $\frac{1}{2}$ (4 + 9), $\frac{1}{2}$ (- 10 - 2 )] = ( $\frac{13}{2}$ , - 6)

5 0

3 years ago

Let AB = 24, AC = 10 and BC = 26.

nata0808 [166]

Answer:

a) 24

b) 10

c) 12/13

d) 5/13

e) 12/5

Step-by-step explanation:

a) We can see that the leg opposite <C is AB, and we are given AB = 24

b) We can see the leg adjacent to <C is AC, and we are given that AC = 10

c) The trig function sine is equal to

$\frac{opposite}{hypotenuse}$

The opposite, AB, is 24, and the hypotenuse, BC, is 26. We can plug those numbers in:

$sin(c) = \frac{24}{26} = \frac{12}{13}$

d)The trig function cosine is equal to

$\frac{adjacent}{hypotenuse}$

The adjacent, AC, is 10, and the hypotenuse, BC, is 26. We can plug those numbers in:

$cos(c) = \frac{10}{26} = \frac{5}{13}$

d)The trig function tangent is equal to

$\frac{opposite}{adjacent}$

The opposite, AB, is 24, and the adjacent, AC, is 10. We can plug those numbers in:

$tan(c) = \frac{24}{10} = \frac{12}{5}$

4 0

3 years ago