Terri will replace the tile and carpet in her apartment. How many total square feet of tile and carpet must Terri purchase in or
der to refloor her apartment?
Please help me with this question!
Please help me with this question!
1 answer:
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The dimensions of the rectangle given are
length = 14 meters
Width = 8 meters
The perimeter of the rectangle is given by the sum of its sides
The rectangle has to opposite sides of 14 meters and two opposite sides of 8 meters
Hence adding up the 4 sides we get
Hence option B is the right answer
Answer:
No, political science classes does not require less writing than history classes.
Step-by-step explanation:
We are given that the 55 randomly selected political science classes assigned an average of 19.6 pages of essay writing for the course. The standard deviation for these 55 classes was 4.8 pages.
The 50 randomly selected history classes assigned an average of 20.2 pages of essay writing for the course. The standard deviation for these 50 classes was 3.3 pages.
<em>Let </em><em> = mean writing required by political science classes</em>
<em /><em> = mean writing required by history classes</em>
SO, Null Hypothesis, :
or
{means that political science classes require more or equal writing than history classes}
Alternate Hypothesis, :
or
{means that political science classes require less writing than history classes}
The test statistics that will be used here is <u>Two-sample t test statistics</u> as we don't know about the population standard deviations;
T.S. = ~
where, = sample average writing for political science course= 19.6 pages
= sample average writing for history course= 20.2 pages
= sample standard deviation for political science classes = 4.8 pages
= sample standard deviation for history classes = 3.3 pages
= sample of selected political science classes = 55
= sample of selected history classes = 50
Also, =
= 4.154
So, <u><em>the test statistics</em></u> = ~
= -0.739
<em>Now at 0.01 significance level, the t table gives critical value of -2.367 at 103 degree of freedom for left-tailed test. Since our test statistics is more than the critical value of t as -0.739 > -2.367, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.</em>
Therefore, we conclude that political science classes require more or equal writing than history classes.