2 years ago

Solve the following equation

Mathematics

2 answers:

saul85 [17]2 years ago

6 0

-11/5

Step-by-step explanation:

Naddika [18.5K]2 years ago

5 0

$answer = \frac{ - 11}{5} \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment$

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An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average

Lena [83]

Answer:

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Step-by-step explanation:

Data provided in the question:

Confidence level = 99%

Therefore,

α = 1% = 0.01

[ from standard normal table ]

z-value for $z_{\frac{\alpha}{2}}= z_{\frac{0.01}{2}}=$ = 2.58

Margin of error, E = $0.06

Standard deviation, σ = $0.32

Now,

n = $(\frac{z_{0.005}\sigma}{E})^2$

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Hence,

minimum number of gas stations that she should include in her sample is 190

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