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4 years ago

Find the square root 25

Mathematics

1 answer:

ss7ja [257]4 years ago

7 0

Answer:

Step-by-step explanation:

<em>Multiply the number by itself, so because 5 * 5 = 25, the sqrt of 25 is 5. </em>

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Answer:

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3 years ago

(a) Find a 90% confidence interval for the population mean price (per 100 pounds) that farmers in this region get for their wate

Anon25 [30]

Answer:

The margin of error (E) $=0.49$

Step-by-step explanation:

Given,

mean $\bar{x}=6.88$

standard deviation $\sigma=1.90$

sample size $n=41$

$90\% \quad \text{confidence interval}$

Critical value $=\frac{z_\alpha}{2}\quad \quad\quad[\because\;\alpha=1-\text{confidence interval}]$

$=1-0.90$

$\Rightarrow \alpha=0.1$

Critical value $=\frac{z_{0.1}}{2}$

$=z_{0.05}$

$=1.645$

The margin of error (E) $=\frac{z_\alpha}{2} \times\frac{\sigma}{\sqrt{n} }$

$=1.645\times\frac{1.90}{\sqrt{41} }$

$=0.49$

Hence, The margin of error (E) $=0.49$

Complete question is attached in below.

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3 years ago

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Step2247 [10]

Answer:

Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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