4 years ago

(2p-1)^2 Multiplying polynomials

Mathematics

1 answer:

prohojiy [21]4 years ago

7 0

Answer:

Step-by-step explanation:

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stiks02 [169]

Answer:

(4,1)

Step-by-step explanation:

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3 years ago

Using the simple random sample of weights of women from a data set, we obtain these sample statistics: nequals45 and x overbar

Tomtit [17]

Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : $n=45$

$\overline{x}=148.79\text{ lb}$

$\sigma=31.37\text{ lb}$

a) We know that the best point estimate of the population mean is the sample mean.

Therefore, the best point estimate of the mean weight of all women = $\mu=148.79\text{ lb}$

b) The confidence interval for the population mean is given by :-

$\mu\ \pm E$ , where E is the margin of error.

Formula for Margin of error :-

$z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Significance level : $\alpha=1-0.90=0.1$

Critical value : $z_{\alpha/2}=z_{0.05}=\pm1.645$

Margin of error : $E=1.645\times\dfrac{31.37}{\sqrt{45}}\approx 7.69$

Now, the 90% confidence interval for the population mean will be :-

$148.79\ \pm\ 7.69 =(148.79-7.69\ ,\ 148.79+7.69)=(141.1,\ 156.48)$

Hence, the 90% confidence interval estimate of the mean weight of all women= (141.1, 156.48)

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3 years ago

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iren2701 [21]

Answer:

Step-by-step explanation:

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3 years ago

Complete the comparison: 2+7>? a. 9+4 b. 7+3 c. 10-2 d. 8+2

Zina [86]

The answer is c because 2+7=9 and 10-2=8 and 9 is greater than 8 so 2+7>10-2

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3 years ago

Given that M is the midpoint of L and P. If LP=4x-1, LM=8, find x and LP

Alenkinab [10]

Answer:

LP = 16 units (8 + 8)

x = 4.25 units

Step-by-step explanation:

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3 years ago