Answer:
1. The Civil Rights Movement of February 1, 1960.- Supporting Argument
2. The case of a bone marrow donor for the Silicon Valley worker.- Counterargument
Explanation:
The author Malcolm Gladwell used the case of the sit-in by the four students in a white restaurant on February 1, 1960, to support his argument that close ties are very essential to high-risk activism. He believed that knowing friends on a personal level who supported the same course increased the chances of participating and persevering in acts of protests that could be life-threatening. For him, this level of success cannot be ensured by social media.
A counter-argument was when a Silicon Valley worker came down with leukemia that required a bone marrow transplant. It was impossible to get the donor through close relatives but only succeeded through a social media platform when the message was circulated among many people. The author countered the success of social media in this regard by saying that the intent was to have a sense of accomplishment and to receive praise. It did not involve a financial or personal risk.
Of the options provided, that which is not a property of the mean is;
- The mean is most subject to sampling variation.
Of all the measures of central tendencies, the mean is the least subject to sampling variation. The mean is the average of scores and it is symbolized by Xbar.
When used in reference to a whole population, the mean is represented as <em>μ.</em> The mean is the average of a set of scores.
Some other properties of the mean include that the sum of the deviations about the mean is equal to zero, the mean is affected by extreme scores, and the mean is sensitive to the exact value of the scores in a distribution.
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Answer:
Weight of silver coin = 29.25 units , weight of gold coin = 35.75 units
Explanation:
Let the weight of 1 gold coin be 
Weight of 1 silver coin be 
Total no of gold coins = 9
Total no of silver coins = 11
Total weight of gold coins = 9
Total weight of silver coins = 11
It is given that both weigh same thus we have
After replacing coins the weights become as under
Now it is given that gold stack weighs 13 unit less thus adding 13 units to gold stack gives it's weight equal to silver stack
the above relation modifies as
