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Mamont248 [21]
2 years ago
13

Can someone help me solve this matrix

Mathematics
1 answer:
liraira [26]2 years ago
6 0

Answer:

You cant add a negative number.

Step-by-step explanation:

If you add a negative number you will not have a full answer.

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43 minutes

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A certain change in a process for manufacture of component parts is being considered. Samples are taken using both the existing
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a) The confidence interval is 0.00\leq\pi_1-\pi_2\leq0.02.

Step-by-step explanation:

We have to calculate a confidence interval (CI) of a difference of proportions.

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For the new procedure, the proportion is:

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s=\sqrt{\frac{p_1(1-p_1)}{n_1} +\frac{p_2(1-p_2)}{n_2} }\\\\s=\sqrt{\frac{0.05(1-0.05)}{1500} +\frac{0.04(1-0.04)}{2000} }=\sqrt{ 0.000032 + 0.000019 }=\sqrt{  0.000051 }\\\\s=0.007

For a 90% CI, the z-value is 1.64.

Then, the CI is:

(p_1-p_2)-z*\sigma \leq\pi_1-\pi_2\leq(p_1-p_2)+z*\sigma \\\\(0.05-0.04)-1.64*0.007\leq\pi_1-\pi_2\leq(0.05-0.04)+1.64*0.007\\\\0.01-0.01\leq\pi_1-\pi_2\leq0.01+0.01\\\\0.00\leq\pi_1-\pi_2\leq0.02

6 0
3 years ago
Round 1.0649 to the nearest thousandth.
yuradex [85]

1.065.   The 5 is the nearest thousandth


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Ruby’s homework covers multiplication with the powers of 10 the first question on her homework is 82.6 x 10 to the power of 2 wh
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Answer:

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82.6 x 10 to the power of 2 :

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= 826

7 0
3 years ago
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