Mathematics, 30.03.2020 15:42, s61371
For each of the following, assume that the two samples are selected from populations with equal means and calculate how much difference should be expected, on average, between the two sample means.
a. Each sample has n 5 scores with s2 38 for the
first sample and s2 42 for the second. (Note:
Because the two samples are the same size, the pooled variance is equal to the average of the two sample variances.)
b. Each sample has n 20 scores with s2 38 for the
first sample and s2 42 for the second.
c. In part b, the two samples are bigger than in part a,
but the variances are unchanged. How does sample size affect the size of the standard error for the sample mean difference?
Answers: 3
Mathematics, 21.06.2019 16:20, jaylanmahone223
Apolynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. if the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?
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Mathematics, 21.06.2019 19:30, mostman077
Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5
Answers: 1
Mathematics, 21.06.2019 20:30, nosugh
If m∠abc = 70°, what is m∠abd? justify your reasoning. using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°. using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°. using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality. using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.
Answers: 2
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