Answer:
A.
Explanation:
This phenomenon best illustrates why intelligence tests need to be revised for predictive validity. The tests are taken initially and show high scores, then they are taken again and show even higher scores. This shows that the individuals are getting smarter. If the test continues to be taken without revision then the same results will continue since the individuals will continue to become smarter but the test will continue being the same. Therefore, becoming much easier for the participants every time. This ultimately leads to better and better scores.
Answer: 0.05%
Explanation:
Cystic fibrosis is a genetic disease that results in the body producing thick, and sticky mucus which is abnormal.
From the question, we are informed that 1 out of every 2,000 babies born in the US have cystic fibrosis, the percentage of the above population that has cystic fibrosis will be:
= 1/2000 × 100
= 0.05%
The 2010 Census enumerated 308.7 million people in the United States, a 9.7 percent increase from 281.4 million in Census 2000. Of the total population in 2010, 300.8 million lived in 116.7 million households for an average of 2.58 people per household.
<u>Answer:</u>
<em>We have to determine the pattern of numbers followed in the sequence 2, 7, 8, 3, 12, 9.</em>
<em>Do a grouping of the sequence into two groups. Let the first group be 2, 7, 8 and the second group be 3, 12, 9
</em>
<em>
There is a difference of 1 in the pair 2 and 3, a difference of 5 in the pair 7 and 12 and a difference of 1 in the pair 8 and 9
</em>
<em>
This means there would be a difference of 5 in the next pair.
</em>
<em>
So, adding 5 to the first number to the third pair.
</em>
<h2><em>
Hence, the next number will be 13.</em></h2>
