Answer:
Test scores
Step-by-step explanation:
In this example, there are two variables that are being analyzed: the review session that the professor is providing and the test scores of the students. The review session is the independent variable. This is because it is the variable that we can manipulate and that we have control over. On the other hand, the test scores is the variable that <em>depends</em> on whether the students received the review session or not. This makes it the dependent variable.
Answer:
112
Step-by-step explanation:
Total students = 840
Number of students surveyed = 60
Number of students of the 60 with siblings > 3 = 8
Number of students of the 840 with siblings > 3 = 840/60*8 = 112
Answer:
0.9153
Step-by-step explanation:
Computing the z-statistics
Now we must compute the area under the Normal Curve with mean 0 and standard deviation 1 between -1.5 and 2.1
P(-1.5 < x < 2.1) = 0.9153
To compute this value we could use a calculator or a spreadsheet.
<em>In Excel or OpenOffice Calc use
</em>
<em>NORMSDIST(2.1) - NORMSDIST(-1.5)
</em>
<h3>(See picture attached)
</h3><h3>
</h3>
Answer:
it a rational number
Step-by-step explanation:
there is always an odd exponent. So it could not have been made by squaring a rational number! This means that the value that was squared to make 2 (ie the square root of 2) cannot be a rational number. In other words, the square root of 2 is irrational.