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3 years ago

The cost of manufacturing a printer is $35. The

Mathematics

1 answer:

Gelneren [198K]3 years ago

5 0

Answer:

$47.25

Step-by-step explanation:

First, we find how much the markup costs:

35%=35/100

So we do,

35/100x$35 = $12.25

To find the total price of everything, we have to add the price markup AND the original cost of the printer.

So we do, 35 + 12.25 = $47.25

I hope this helps!:)

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The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2006). Do male and female consume

AfilCa [17]

Answer:

Yes. The male and female consumers differ in the amounts they spend.

Step-by-step explanation:

We can express the null and alternative hypothesis as:

$H_0: \mu_m=\mu_w\\\\H_1: \mu_m\neq\mu_w$

It is assumed a significance level of 0.05.

The standard deviation of the difference of means is calculated as:

$s=\sqrt{\frac{s_m^2}{n_m} +\frac{s_w^2}{n_w} } =\sqrt{\frac{35^2}{40} +\frac{20^2}{30} } =\sqrt{30.625+13.333} =\sqrt{43.958} =6.63$

The test statistic is

$t=\frac{(M_m-M_w)-0}{s}=\frac{135.67-68.64}{6.63}=10.11$

The degrees of freedom are:

$df=n_1+n_2-2=40+30-2=68$

The P-value for t=10.11 is P=0, so it is smaller than the significance level. The null hypothesis is rejected.

We can conclude that male and female consumers differ in the amounts they spend.

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3 years ago

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2 years ago

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Step-by-step explanation:

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3 years ago

A group of 266 persons consist of men , women and children and there are four times as many men as children and twice as many wo

klasskru [66]

Answer:

see explanation

Step-by-step explanation:

Let c represent the number of children, then

number of men = 4c and number of women = 2c

Sum the numbers of each and equate to 266

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c = 38

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4 × 38 = 152 and 2 × 38 = 76

The group consists of 38 children, 152 men and 76 women

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3 years ago