A random number generator is set to

1

A random number generator is set to produce any real number between 0 and 15 and it is uniformly distributed. What is the probability that a sample average of 13 numbers produce an average less than 4?

Round answer to the ten-thousands place.

________

2

A second grade teacher gives students prizes for participating in a geography extra-curricular activity. There are three prizes that a student can choose from. The table shows the cost of the item and the probability that the item will be chosen. The student can only choose one prize. On one occasion twenty children participated. As the teacher looks at the prize box and she realizes that it only contains four globe key chains. What is the probability that on this occasion the five or more children want a key chain for a prize?

Round to the ten thousandths place

________

		0 / 1 point

3

A second grade teacher gives students prizes for participating in a geography extra-curricular activity. There are three prizes that a student can choose from. The table shows the cost of the item and the probability that the item will be chosen. The student can only choose one prize. On one occasion, 12 children participate. What is the standard deviation for the sample average cost?

Round to the thousandths place.

________

4

A second grade teacher gives students prizes for participating in a geography extra-curricular activity. There are three prizes that a student can choose from. The table shows the cost of the item and the probability that the item will be chosen. The student can only choose one prize. On one occasion, 25 children participate. What is the standard deviation for the sample proportion of children choosing the globe ball?

Round to the thousandths place

________

5

A second grade teacher gives students prizes for participating in a geography extra-curricular activity. There are three prizes that a student can choose from. The table shows the cost of the item and the probability that the item will be chosen. What is the probability that a child will choose a globe key chain or a big pencil?

________