Assignment 3 Part 2 DQR200

Name___________________________________00

Please print out part 2 of the assignment and submit it during class on Tuesday October 20th.

## SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

## Use the range rule of thumb to estimate the standard deviation. Round results to the nearest tenth.

1) The race speeds for the top eight cars in a 200- mile race are listed below.185.0 182.7 189.2 188.2 175.6 175.8 181.5 178.9 | 1) |

## Use the 68-95-99.7 rule to solve the problem.

- The time it take Claudia to drive to work is normally distributed with a mean of 46 2) minutes and a standard deviation of 5 minutes. What percentage of the time will it take her less than 61 minutes to drive to work?
- Scores on a test are normally distributed with a mean of 102 and a standard deviation of 3) 16. What percentage of scores are greater than 150?
- At one college, GPA’s are normally distributed with a mean of 2.9 and a standard deviation 4) of 0.4. What percentage of students at the college have a GPA between 2.1 and 3.7?

- The annual precipitation for one city is normally distributed with a mean of 30.6 inches 5) and a standard deviation of 2.8 inches. Fill in the blanks.

In 99.7% of the years, the precipitation in this city is between ___ and ___ inches.

## MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

## Please convert each exam grade to a stanard score and determine which score corresponds to the higher relative position.

6) Which is better, a score of 92 on a test with a mean of 71 and a standard deviation of 15, or a score 6) of 688 on a test with a mean of 493 and a standard deviation of 150?

- A) Both scores have the same relative position. B) A score of 688 C) A score of 92

## SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

## Find the percentile for the data value.

7) Data set: 122 134 126 120 128 130 120 118 125 122 126 136 118 122 124 7)

119; data value: 130

30 35 43 44 47 48 54 55 56 57

59 62 63 65 66 68 69 69 71 72

72 73 74 76 77 77 78 79 80 81

81 82 83 85 89 92 93 94 97 98

9) The weights (in pounds) of 30 newborn babies are listed below. Find P36. 9)

5.5 5.7 5.8 5.9 6.1 6.1 6.4 6.4 6.5 6.6

6.7 6.7 6.7 6.9 7.0 7.0 7.0 7.1 7.2 7.2

7.4 7.5 7.7 7.7 7.8 8.0 8.1 8.1 8.3 8.7