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3 years ago

Harriet bought 2kg of potatoes for $1.50 how much would it cost for 1 kg

Mathematics

2 answers:

spin [16.1K]3 years ago

4 0

1kg will cost %0.75 because $1.50 divide by 2 is 0.75

Mila [183]3 years ago

3 0

2 kg = 1.5
1 kg is half of 2 kg, therefore, half the price. Half of 1.5 dollors = 75 cents

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nignag [31]

Answer:

0.71428571428

Step-by-step explanation:

Do it the old fashioned way, get out your calculator, or google it.

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denpristay [2]

Answer:

(1) Correct option is B.

(2) Correct option is C.

Step-by-step explanation:

The information provided is:

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The (1 - <em>α</em>)% confidence interval for the difference between two mean is:

$CI=\bar x_{1}-\bar x_{2}\pm t_{\alpha/2, (n_{1}+n_[2}-2}\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}} }$

The critical value of <em>t</em> is:

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$t_{\alpha/2, n_{1}+n_{2}-2}=t_{0.025, 398}=1.96$

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$CI=22.7-19.7\pm 1.96\sqrt{\frac{4.5^{2}}{200}+\frac{4.3^{2}}{200} }\\=3\pm0.8624\\=(2.1376, 3.8624)\\\approx(2.14, 3.86)$

Thus, the 95% confidence interval, (2.14, 3.86) implies that the true mean difference value is contained in this interval with probability 0.95.

Correct option is B.

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Correct option is C.

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Step-by-step explanation:

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