12in = 1 foot
3 feet = 1 yard
36in = 1 yd
36x2 = 72in/6=12x20 = 240 cents
$2.40
The angles of an equilateral triangle are always 60°
9/8 group- 18/16, 1/8x9
8/9 group- 1/18x16, 16/18
other- 1/8x1/9 :)
1/2 is 2/4, and so we would need another 1/4 to make it equal to 3/4
1/8 is not equal to 1/4, so 1/2+1/8 does not equal 3/4
Using the t-distribution, it is found that the test statistic for the hypotheses test is given by:
<h3>What are the hypotheses tested?</h3>
At the null hypotheses, it i tested if the mean difference remains the same, that is:
At the alternative hypotheses, it is tested if it has decreased, hence:
.
<h3>What is the test statistic?</h3>
The test statistic is given by:
The parameters are:
- is the sample mean.
- is the value tested at the null hypothesis.
- s is the standard deviation of the sample.
The parameters are given as follows:
.
Hence the test statistic is given by:
More can be learned about the t-distribution at brainly.com/question/16162795
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