In a simple economy, people consume only two goods: food and clothing. The market basket of goods used to compute the CPI has 65 units of food and 22 units of clothing.
|
Food |
Clothing |
|
|
Last year’s price |
$ 4 |
$ 16 |
|
This year’s price |
$ 8 |
$ 19 |
|
a) What are the percentage increases in the price of food? ____________ b) What are the percentage increases in the price of clothing? ____________ |
||
|
c) What is the percentage increase in the CPI? ____________ |
||
In: Economics
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 17. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 49 and 151? (b) What percentage of people has an IQ score less than 83 or greater than 117? (c) What percentage of people has an IQ score greater than 151?
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 12. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 88 and 112? (b) What percentage of people has an IQ score less than 76 or greater than 124? (c) What percentage of people has an IQ score greater than 136?
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between 70 and 130?
(b) What percentage of people has an IQ score less than 55 or greater than 145?
(c) What percentage of people has an IQ score greater than 115?
In: Statistics and Probability
ASU is concerned about the retention rate among its students, i.e. percentage of ASU students that return next semester.To do this, ASU randomly selects 200 students and records whether or not they return to ASU the following semester. What is the statistic?
| a. |
The percentage of the 200 students that returned. |
|
| b. |
All ASU students. |
|
| c. |
The percentage of all ASU students that returned. |
|
| d. |
The 200 ASU students that were selected. |
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of
100
and a standard deviation of
13
Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between
87
and
113?
(b) What percentage of people has an IQ score less than
74
or greater than
126?
(c) What percentage of people has an IQ score greater than
126?
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13.
Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between 87 and 113?
(b) What percentage of people has an IQ score less than 87 or greater than 113?
(c) What percentage of people has an IQ score greater than 139?
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 18. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 64 and 136? (b) What percentage of people has an IQ score less than 64 or greater than 136? (c) What percentage of people has an IQ score greater than 154?
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between 61 and 139?
(b) What percentage of people has an IQ score less than 74 or greater than 126?
(c) What percentage of people has an IQ score greater than 113?
In: Statistics and Probability
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 18. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between 82 and 118?
(b) What percentage of people has an IQ score less than 64 or greater than 136?
(c) What percentage of people has an IQ score greater than 118?
In: Statistics and Probability