Answer: Yes, this indicate the proportion of adult americans that attended college and believe in extraterrestrials is higher than the proportion that did not attend college.
Step-by-step explanation:
Since we have given that
Hypothesis:

n₁ = 100
x₁ = 37
So, 
n₂ = 100
x₂ =47
So, 
At 0.01 level of significance, z = 2.33
So, test statistic value would be

Since, 2.33>-1.44
Hence, we will reject the null hypothesis.
Therefore, Yes, this indicate the proportion of adult americans that attended college and believe in extraterrestrials is higher than the proportion that did not attend college
Answer:
The cost of hardbook is $9 and cost of paperback is $5.
Step-by-step explanation:
Let x be the price for hardback book and y be the price for paperback book.
Mr. Yamamoto purchased 42 new hardcover books and 64 new paperback books, which cost a total of $698.
We can write the equation as:

He also purchased 42 new hardcover books and 58 new paperback books, which cost a total of $668.
We can write the equation as:

We have to use the elimination method to solve the two equations.
We eliminate x by subtracting the two equations.

Thus, the cost of hardbook is $9 and cost of paperback is $5.
Answer:
50% decrease
Step-by-step explanation:
since a 31 tree decrease is half of 62 the percent would be a 50% decrease (half)
So the answer is 50% decrease
Hope this helps :)
Answer:
52
Step-by-step explanation:
Complementary angles are two angles that add up to equal 90 degrees
90-38= 52
Therefore the complementary angle or "complement" of 38 is 52 degrees