Answer:
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Determine whether the underlined number is a statistic or a parameter. a sample of seniors selected and it is found that 25% own
1 answer:
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Answer:
The questions are
- What does the frequency column in the attached table sum to?
- What does the relative frequency column in attached table sum to?
- What is the difference between relative frequency and frequency for each data value in the attached table?
- What is the difference between cumulative relative frequency and relative frequency for each data value in attached table?
The correct answers are
- 65
- 1
- The relative frequency gives the relative proportion of each frequency in the sample while
- The frequency is the observed number of count of each grouping has in a given sample size
Step-by-step explanation:
1. The frequency column in the attached column sums up to 65 because it is the total number of sales persons selected
2. The relative frequency column in the attached table sum up to 1 because it is the sum of the fractions of the individual frequencies to the total frequency
3. The difference between relative frequency and frequency for each data value is that
The relative frequency gives the relative proportion of each frequency in the sample while
4. The frequency is the observed number of count of each grouping has in a given sample size
Answer:
Step-by-step explanation:
In this problem we have the equation of the following quadratic equation and we want to solve it using the method of square completion:
The steps are shown below:
For any equation of the form:
1. If the coefficient a is different from 1, then take a as a common factor.
In this case .
Then we go directly to step 2
2. Take the coefficient b that accompanies the variable x. In this case the coefficient is -3. Then, divide by 2 and the result squared it.
We have:
3. Add the term obtained in the previous step on both sides of equality:
4. Factor the resulting expression, and you will get:
Now solve the equation:
Note that the term is always > 0 therefore it can not be equal to
The equation has no solution in real numbers.
In the same way we can find the complex roots: