Homework Answers

The correct size of a nickel is 21.21 millimeters. Based on that, the data can be summarized into the following table:

Too SmallToo LargeTotalLow Income172340High Income251035Total423375

Based on this data: (give your answers to parts a-c as fractions, or decimals to at least 3 decimal places. Give your to part d as a whole number.)

a) The proportion of all children that drew the nickel too small is:     

Assume that this proportion is true for ALL children (e.g. that this proportion applies to any group of children), and that the remainder of the questions in this section apply to selections from the population of ALL children.

b) If 5 children are chosen, the probability that exactly 2 would draw the nickel too small is:    

c) If 5 children are chosen at random, the probability that at least one would draw the nickel too small is:    

The correct size of a nickel is 21.21 millimeters. Based on that, the data can be summarized into the following table:

Too SmallToo LargeTotalLow Income172340High Income251035Total423375

Based on this data: (give your answers to parts a-c as fractions, or decimals to at least 3 decimal places. Give your to part d as a whole number.)

a) The proportion of all children that drew the nickel too small is:     

Assume that this proportion is true for ALL children (e.g. that this proportion applies to any group of children), and that the remainder of the questions in this section apply to selections from the population of ALL children.

b) If 5 children are chosen, the probability that exactly 2 would draw the nickel too small is:    

c) If 5 children are chosen at random, the probability that at least one would draw the nickel too small is:    

A company prices its tornado insurance using the following assumptions:

• In any calendar year, there can be at most one tornado. 

• In any calendar year, the probability of a tornado is 0.04. 

• The number of tornadoes in any calendar year is independent of the number of tornados in any other calendar year.

Using the company's assumptions, calculate the probability that there are fewer than 2 tornadoes in a 16-year period.

Consider the function f(x) = 3x + sin(x) − e x . (1.1) Use the bisection method to determine a root of f(x) in the interval (0.0, 0.5), using up to ten iterations.

The quality grade point average gpa of 200level economics student follows approximately a normal distribution with mean of 3.4 and SE of 2.2.How many of these students would expect to have a score between 3.5 and 4.5 inclusive,if the grade point average are computed to the nearest tenth