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Likurg_2 [28]
2 years ago
8

Write the converse.

Mathematics
1 answer:
kenny6666 [7]2 years ago
5 0
The answer cant be A cant be B Cant be D so it has to be C
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A machine that produces a major part for an airplane engine is monitored closely. In the past, 10% of the parts produced would b
nata0808 [166]

Answer:

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is of at least 216.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

For this problem, we have that:

p = 0.1

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is

We need a sample size of at least n, in which n is found M = 0.04.

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.04 = 1.96\sqrt{\frac{0.1*0.9}{n}}

0.04\sqrt{n} = 0.588

\sqrt{n} = \frac{0.588}{0.04}

\sqrt{n} = 14.7

(\sqrt{n})^{2} = (14.7)^{2}

n = 216

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is of at least 216.

7 0
3 years ago
Given the initial inequality −4 (7)<br> c. (−4) = (7)
Katen [24]

Answer:

Step-by-step explanation:

Simplify 4*(7-c)

4

⋅

(

7

−

c

)

4

⋅

(

7

-

c

)

Apply the distributive property.

4

⋅

7

+

4

(

−

c

)

4

⋅

7

+

4

(

-

c

)

Multiply.

Tap for more steps...

Multiply 4

4

by

7

7

.

28

+

4

(

−

c

)

28

+

4

(

-

c

)

Multiply

−

1

-

1

by

4

4

.

28

−

4

c

28

-

4

c

28

−

4

c

6 0
2 years ago
Read 2 more answers
9.84615384615 in a fraction
choli [55]

Answer:

Step-by-step explanation:

128/13

3 0
3 years ago
Evaluate -3x+4y when x=-7 y=-10
Alexus [3.1K]

Answer:

-19

Step-by-step explanation:

6 0
3 years ago
Please help ASAP really need this
Aleonysh [2.5K]

Answer:

21.79 + c \leq 25

Joshua can spend up to 3.21 on a card.

Step-by-step explanation:

21.79 + c \leq 25 is the correct equation because Joshua is spending 21.79 on flowers, a certain amount on the card, and the maximum he can spend is 25. That is why you use the less than or equal to sign.

To solve, first subtract 21.79 from both sides to get: c \leq 3.21. This means that Joshua can spend up to 3.21 on a card.

Hope it helps!

3 0
3 years ago
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