Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).
<h3>What is a t-distribution confidence interval?</h3>
The confidence interval is:
In which:
- is the sample mean.
- s is the standard deviation for the sample.
The critical value, using a t-distribution calculator, for a two-tailed <em>95% confidence interval</em>, with 49 - 1 = <em>48 df</em>, is t = 2.0106.
Hence:
The 95% confidence interval for the number of units students in their college are enrolled in is (11.7, 12.7).
More can be learned about the t-distribution at brainly.com/question/16162795
The complete question has options given are; 1, 9, 1/2, .5, 2, 3/4 and 6.
The coefficients which could be used in a balanced equation are; 1, 9, 2, and 6.
<h3>Coefficients in balanced equations</h3>
The coefficients which can be used in balanced equations are whole numbers.
Although, other type of numbers such as fractions and decimals can be used, they may need to be simplified into whole number forms by multiplying the whole equation by a required factor for ease of computation
Read more on coefficients in balanced Equations;
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Answer: social desirability .
Explanation: your welcome <3 .
Answer:
The equation that could be used for determining the y should be option B y = 20x + 75
Calculation of an equation:
Since dad gave him 75 coins. each month he will add 20 coins.
Here we assume a number of months be x
So, the equation is
y = 20x + 75
Therefore, we can conclude that The equation that could be used for determining the y should be option B y = 20x + 75
Explanation:
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Acetic acid and ether are pure substance because they can not be further broken down.
<h3>What is a homogeneous mixture?</h3>
A homogenous mixture consists only of single phase. A solution is comprised of a solute and a solvent while a colloid is a false solution.
The following is a classification of each of the items;
1- Acetic acid - pure substance
2- Ether - pure substance
3- Vinegar - homogeneous mixture
4- Gravy - colloid
5- Beef stew - colloid
6- Seltzer water - solution
7- Salad - colloid
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Mising parts;
Classify each of the following as a pure substance, homogeneous mixture, solution, or colloid.
1- Acetic acid
2- Ether
3- Vinegar
4- Gravy
5- Beef stew
6- Seltzer water
7- Salad