Could someone help me understand this?

Mathematics

1 answer:

larisa86 [58]3 years ago

5 0

Answer:

8 < x < 40

Step-by-step explanation:

x − 8 must be more than 0, but it can't be greater than 32.

0 < x − 8 < 32

8 < x < 40

A more precise answer would require law of cosines and calculus.

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Answer:

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Step-by-step explanation:

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astra-53 [7]

Answer:

C. z = 2.05

Step-by-step explanation:

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The sample 1 (year 1995), of size n1=4276 has a proportion of p1=0.384.

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The estimated standard error of the difference between means is computed using the formula:

$s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.3735*0.6265}{4276}+\dfrac{0.3735*0.6265}{3908}}\\\\\\s_{p1-p2}=\sqrt{0.00005+0.00006}=\sqrt{0.00011}=0.0107$