2 years ago

I need help please

Mathematics

1 answer:

emmainna [20.7K]2 years ago

3 0

Answer:

1+1=2

Step-by-step explanation:

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1) yes

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3 years ago

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Salaries of 49 college graduates who took a statistics course in college have a mean, x overbar, of $ 65 comma 300. Assuming a

Molodets [167]

Answer: $60,540< \mu$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}-z^*\dfrac{\sigma}{\sqrt{n}}< \mu$

, where $\sigma$ = Population standard deviation.

n= sample size

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z* = Critical z-value .

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Two-tailed critical value for 95% confidence interval = $z^*=1.960$

Then, the 95% confidence interval would be :-

$65,300-(1.96)\dfrac{17000}{\sqrt{49}}< \mu$

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$=65,300-4760< \mu$

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Hence, the 95% confidence interval for estimating the population mean $(\mu)$ :

$60,540< \mu$

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2 years ago

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I need help please ​

I need help please