2 years ago

Select the correct solution for the expression. 2 5 + 3 8

Mathematics

1 answer:

77julia77 [94]2 years ago

8 0

Answer:

25+38= 63

Step-by-step explanation:

Used a calculator.

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

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

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$\Rightarrow \alpha=0.1$

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

$=z_{0.05}$

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$=0.49$

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

Complete question is attached in below.

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