3 years ago

1. How many students have at least 1 brother but no sisters?

Mathematics

1 answer:

AleksandrR [38]3 years ago

6 0

You go to Cent xD ain't no one going to answer that

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Please perform the indicated operation.

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What’s the answer to this if u know tho! Thank uuu :)))

alukav5142 [94]

Answer:

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x+20=140

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The Wing Station wants the average price of the lunch meal deals to be $8. Lunch Meal Deal Prices Item Price ($) Deluxe hamburge

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The dataset Restaurant Tips contains data recorded from 157 restaurant bills at a bistro in New York over a two week period and

xz_007 [3.2K]

Answer: ($3.532, $4.166)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.90=0.10$

Critical value : $z_{\alpha/2}=1.645$

Sample size : n= 157

Sample mean : $\overline{x}=\$\ 3.849$

Standard deviation : $\sigma= \$\ 2.421$

The confidence interval for population mean is given by :_

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$\text{i.e. }\$\ 3.849\pm (1.64)\dfrac{2.421}{\sqrt{157}}\\\\\approx\$\ 3.849\pm0.317\\\\=(\$\ 3.849-0.317,\$\ 3.849+0.317)=(\$\ 3.532,\$\ 4.166)$

Hence, the 0% confidence interval for the average tip given at this restaurant = ($3.532, $4.166)

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3 years ago

Two questions in 1 please help

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Answer:

1 and idk the second

Step-by-step explanation:

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