1) Suppose 40% of eligible voters are in favour of a government policy.

In a random sample of 600 eligible voters, the probability that less than 38% will be in favour of this policy is closest to

Group of answer choices

0.3413

0.1587

0.5000

0.2500

0.0500

2) The distribution of actual weights of 8-ounce chocolate bars produced by a certain machine is Normal, with a mean of 8.1 ounces and a standard deviation of 0.1 ounces. What weight (in ounces) should be put on the chocolate bar wrappers so that only 1% of bars are underweight?

Group of answer choices

8.33

8.77

7.77

7.87

8.23

3) A company has a large number of employees around the world. Suppose their employees' average salary is $40,000 and the standard deviation is $10,000. A random sample of 400 employees is selected.

The probability that the average salary of the 400 sampled employees is over $41,000 is closest to

Group of answer choices

0.4602

0.4772

0.0228

0.0398

0.6324