magiflores6122

19.09.2019 • 

Mathematics

Astudent claims that he can correctly identify whether a person is a business major or an agriculture major by the way the person dresses. suppose in actuality that if someone is a business major, he can correctly identify that person as a business major 87% of the time. when a person is an agriculture major, the student will incorrectly identify that person as a business major 16% of the time. presented with one person and asked to identify the major of this person (who is either a business or an agriculture major), he considers this to be a hypothesis test with the null hypothesis being that the person is a business major and the alternative that the person is an agriculture major. what is the value of α?

Ответ:

FlayMaster101

11.03.2022

Mathematics

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His gain percent would have been 8%

Step-by-step explanation:

The key to answering this question is to first calculate the price at which the wheat flour was bought.

Mathematically;

% profit = (selling price-cost price)/cost price * 100%

Let the cost price be $x

Thus;

% profit = (30-x)/x * 100

20 = 100(30-x)/x

20x = 3000-100x

100x + 20x = 3000

120x = 3000

x = 3000/120

x = Rs 25

So let’s assume he sold at Rs 27

His profit would have been 27-25 = 2

His gain or loss percentage would’ve been;

2/25 * 100/1 = 200/25 = 8% (gain, since selling price is greater than the cost price)

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