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Ira Lisetskai
3 hours ago
15

What value of x will make this expression equal to 28.1?

Mathematics
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Two hundred randomly selected people were asked to state their primary source for news about current events: (1) Television, (2)
lawyer [12517]

Answer:

Explanation:

Hello!

You possess a sample involving 200 participants, who were surveyed regarding their main source of news, categorized into (1) Television, (2) Radio, (3) Internet, and (4) Other.

Your goal is to evaluate whether the proportions in this sample align with the established frequencies of 10%, 30%, 50%, and 10% respectively.

The suitable statistical method to assess if the sample matches the known or historical distribution is the Chi-Square goodness of fit test. In this test, the null hypothesis represents the model or distribution under examination. In this scenario, you need to articulate the proportions for each category:

H₀: P(1)= 0.10; P(2)= 0.30; P(3)= 0.50; P(4)= 0.10

Wishing you a SUPER day!

7 0
2 months ago
Hailey paid \$13$13dollar sign, 13 for 1\dfrac3{7} \text{ kg}1 7 3 ​ kg1, start fraction, 3, divided by, 7, end fraction, start
Zina [12379]

Answer:

The price per kilogram of salami amounts to = $9.1

Step-by-step explanation:

Given:

Hailey spent $13 on 1\frac{3}{7} kg of sliced salami.

We need to determine the cost per kg of the salami.

Solution:

We will use the unitary method to find the cost for one kilogram of salami.

If 1\frac{3}{7} kg of salami costs $13

Then the cost for 1 kg of salami in dollars = 13\div 1\frac{3}{7}

When dividing mixed numbers, we convert them to fractions.

⇒ 13\div \frac{(7\times1)+3}{7}

⇒ 13\div \frac{10}{7}

To divide fractions, we take the reciprocal of the divisor and multiply.

⇒ 13\times \frac{7}{10}

⇒ \frac{13\times7}{10}

⇒ \frac{91}{10}

⇒ 9.1

Hence, the cost per kilogram of salami is = $9.1

3 0
3 months ago
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Which of the following appear in the diagram below??
zzz [12365]
The elements that are visible include A, B, and C.
7 0
3 months ago
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