Answer:
c. 7.25
Step-by-step explanation:
Given the following information from an experiment:
![\left\begin{array}{ccc}&$Sample Size&$Sample Mean \\$Treatment 1&5&4\\$Treatment 2&10&8\\$Treatment 3&5&9\end{array}\right](https://tex.z-dn.net/?f=%5Cleft%5Cbegin%7Barray%7D%7Bccc%7D%26%24Sample%20Size%26%24Sample%20Mean%20%5C%5C%24Treatment%201%265%264%5C%5C%24Treatment%202%2610%268%5C%5C%24Treatment%203%265%269%5Cend%7Barray%7D%5Cright)
Total Sample Size =5+10+5=20
Therefore, the overall mean
![=\dfrac{(5 \times 4)+ (10 \times 8) + (5 \times 9)}{20} \\=\dfrac{145}{20}\\\\=7.25](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B%285%20%5Ctimes%204%29%2B%20%2810%20%5Ctimes%208%29%20%2B%20%285%20%5Ctimes%209%29%7D%7B20%7D%20%5C%5C%3D%5Cdfrac%7B145%7D%7B20%7D%5C%5C%5C%5C%3D7.25)
If you connect those 7 points, it makes a heptagon.
Answer:
4,864,000,000.00
Step-by-step explanation:
Answer:
- C
- B
- A
- E
- D
Step-by-step explanation:
1. All numbers on either of lists B or C are all the numbers 1..6, as in choice C.
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2. Numbers in B that are also in A are just 2 and 4. 6 is not in A. choice B.
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3. Numbers in both A and C are just the numbers in C. choice A.
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4. There are no numbers in both B and C, so B∩C is the empty set. Anything intersected with the empty set is the empty set. choice E.
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5. As in (4), but here, we want the union of A with the empty set. That result will be set A, choice D.
Answer:
See below for answers (in bold) and explanations
Step-by-step explanation:
<u>Part A</u>
According to the Empirical Rule, 99.7% of the data in a normal distribution are ±3σ standard deviations away from the mean. Hence, approximately 99.7% of women over seventy have blood pressures between 134-3σ = 134-3(7) = 134-21 = 113 mmHg and 134+3σ = 134+3(7) = 134+21 = 155 mmHg.
<u>Part B</u>
As 141-134=134-127=7, this represents ±1σ standard deviations away from the mean of 134 mmHg, which corresponds to 68% of the data by the Empirical Rule. Hence, approximately 68% of women over seventy have blood pressures between 127 mmHg and 141 mmHg