Olga worked 37.5 hours last week at tge library and earned $12.50 an hour. if she gets $2.50 per hour raise, how many hours will she have to work to make the same amount of money as she did last week?

Step-by-step explanation:

1) The statement is true. A larger margin of error creates a wider confidence interval, which is more likely to contain the population parameter.

2) The statement is false. A larger sample size decreases the standard error of the sample proportion, which decreases the margin of error.

3)  The statement is true. A smaller sample size increases the standard error of the sample proportion, which, for a fixed margin of error, decreases the critical value, z*.

4)  The statement is true. One can see from the margin of error formula that the margin of error is inversely proportional to the square root of n.