Review 2 MAT 1190
Review 3 MAT 1190
Problem 1. On the Price Is Right game show, a contestant spins a wheel with numbers 1 through 7, with equally sized regions for each of these numbers. If the contestant spins once, find the probability that the number is
(a) A 6.
(b) An even number.
(c) A number greater than 4.
(d) A number less than 8.
(e) A number greater than 7.
Problem 2.
A spinner has 4 equally likely regions numbered 1 to 4. The arrow is spun twice. What is the probability that the spinner will land on a 1 on the first spin and on a red region on the second spin? Draw a tree diagram to represent your answer.
Problem 3.
Find the interest on $50,000 compounded weekly at 7% for 20 years. Assume a 52-week year.
Problem 4.
The following data represent the record high temperatures for each of the 50 states.
(a) Construct a grouped frequency distribution for the data using 7 classes.
(b) Draw a histogram for the frequency distribution
(c) Draw a frequency polygon
112 100 127 120 134 118 105 110 109 112
110 118 117 116 118 122 114 114 105 109
107 112 114 115 118 117 118 122 106 110
116 108 110 121 113 120 119 111 104 111
120 113 120 117 105 110 118 112 114 114
Problem 5.
In January of 2006, your family moved to a tropical climate. For the year that followed, you recorded the number of rainy days that occurred each month. Your data contained 14, 14, 10, 12, 11, 13, 11, 11, 14, 10, 13, 8.
MAT 1190 Review 2: Answers
Problem 1. (a) [pic] (b) [pic] (c) [pic] (d) 1 (e) 0
Problem 2. 1/8
[pic]
Problem 3.
$152,569.20
Problem 4.
|Class Limits |Frequency |
|100 - 104 | 2 |
|105 - 109 |8 |
|110 - 114 |18 |
|115 - 119 |13 |
|120 - 124 |7 |
|125 - 129 |1 |
|130 - 134 |1 |
[pic]
[pic]
Problem 5.
|mean |mode |median |
|11.75 |11, 14 |11.5 |
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