Mathematics, 09.12.2021 05:00 olivernolasco23
the mean of normally distributived test scores is 81 and the standard deviation is 3. if there are 172 test scores in the data sample, how many of them were in the 81 to 87 range
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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.
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the mean of normally distributived test scores is 81 and the standard deviation is 3. if there are 1...
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