3 years ago

Can somebody tell me which one it is? options are (BE, CF, DG, GF)

Mathematics

1 answer:

mixas84 [53]3 years ago

7 0

Answer:

Step-by-step explanation:

Mark as brainliest please

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Step-by-step explanation:

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3 years ago

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PSYCHO15rus [73]

Answer:

depends

Step-by-step explanation:

Quotient means the answer

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3 years ago

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3 years ago

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Do you estimate that 200 people attend a school concert. The actual attendance was 240 people find the percent error

harkovskaia [24]

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3 years ago

Construct a 95% confidence interval for the population mean, μ. Assume the population has a normal distribution. A random sample

GuDViN [60]

Answer: $(628.48,\ 661.52)$

Step-by-step explanation:

Given : Sample size : $n=16$ , which is a small sample (, 30) so we use t-test.

Sample mean : $\overline{x}=645 \text{ hours}$

Standard deviation : $\sigma = 31 \text{ hours}$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $t_{n-1,\alpha/2}=2.131$

The confidence interval for population mean is given by :-

$\overline{x}\pm t_{n-1,\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=645\pm(2.131)\dfrac{31}{\sqrt{16}}\\\\\approx645\pm16.52\\\\=(645-16.52,\ 645+16.52)\\\\=(628.48,\ 661.52)$

Hence, a 95% confidence interval for the population mean $\mu$ = $(628.48,\ 661.52)$

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3 years ago