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iragen [17]
3 years ago
15

A number t is less than 7

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
8 0

Answer:

6 or 5 or 4...........

Step-by-step explanation:

kotegsom [21]3 years ago
3 0

Answer:

x=N :x<7

Step-by-step explanation:

123456

hope it's helpful

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in my numbers l. the digit in the ones place is double the digit in the tens place. the sum of the digits is 3. my number is?
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is it 1 + 2=3. are is it 2+1=3. are you a  boy  are  not

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2 years ago
Was this a fair test? is it representative of the effectiveness of the test substance
ArbitrLikvidat [17]
<span>No. The test is not a fair test. The test is artificial. Testing the disinfectant against bacteria in a test tube is not representative of the effectiveness of the disinfectant against microbes in the environment. Test tube tests test for efficacy. Effectiveness can only be tested out in the environment.</span>
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Learning
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2 years ago
Which number line shows the solution to the inequality 4x+5&gt;9
Masja [62]
The answer to your question is option 1
3 0
2 years ago
Researchers are studying the distribution of subscribers to a certain streaming service in different populations. From a random
Dahasolnce [82]

Answer:

(0.17 - 0.27) \pm 1.65\sqrt{\frac{0.17*0.83 + 0.27*0.73}{200}}, that is, option C

Step-by-step explanation:

From a random sample of 200 people in City C, 34 were found to subscribe to the streaming service. From a random sample of 200 people in City K, 54 were found to subscribe to the streaming service.

This means that the proportions are:

p_C = \frac{34}{200} = 0.17

p_K = \frac{54}{200} = 0.27

Subtraction of proportions:

In the confidence interval, we subtract the proportions. So:

p = p_C - p_K = 0.17 - 0.27

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

Standard error:

For a subtraction, as the standard deviation of the distribution is the square root of the sum of the variances, we have that:

\sqrt{\frac{\pi(1-\pi)}{n}} = \sqrt{\frac{0.17*0.83 + 0.27*0.73}{200}}

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

So the confidence interval is:

(0.17 - 0.27) \pm 1.65\sqrt{\frac{0.17*0.83 + 0.27*0.73}{200}}, that is, option C

6 0
2 years ago
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