Bot, why can't you change your name?
The stem-and-leaf plot shows the speeds of the fastest steel roller coasters in Europe. The table shows the speeds of the fastest steel roller coasters in North America.
Speeds of the Fastest Steel Roller Coasters in Europe (in miles per hour)
Stem Leaf
7 4 5 5 5
8 0 0 3 4 8
9 9
11 1Key: 7|4=74 miles per hour
Speeds of the Fastest Steel Roller Coasters in North America (in miles per hour)
Canada 90 128 91
U.S. 93 120 100
Mexico 95 92 85
Find the range of the speeds of the fastest steel roller coasters on both continents.
(1 point)
The range of the speeds of the fastest steel roller coasters in Europe is [blank] mph. The range of the speeds of the fastest steel roller coasters in North America is [blank] mph.
The range of the speeds of the fastest steel roller coasters in Europe is 37 mph (119 - 82 mph). The range of the speeds of the fastest steel roller coasters in North America is 45 mph (128 - 85 mph).
how does that make any sense?
I apologize for any confusion. To find the range, you need to subtract the smallest value from the largest value in each set of data.
For the European coasters, the smallest speed is 74 mph (stem 7, leaf 4) and the largest speed is 119 mph (stem 11, leaf 1). So the range is:
119 mph - 74 mph = 45 mph
For the North American coasters, the smallest speed is 85 mph and the largest speed is 128 mph. So the range is:
128 mph - 85 mph = 43 mph
I apologize for my error in the previous response.
Question
Anthony wants to know the average daily high temperatures in his town during the summer. He chose two random samples of 10 consecutive days and recorded the daily high temperatures. The daily high temperatures in Fahrenheit are as follows.
Sample 1: 78 82 85 87 90 85 79 86 91 88
Sample 2: 81 79 80 86 89 92 82 88 84 87
Find the mean daily high temperatures of each sample and calculate the difference between these mean daily high temperatures.
(2 points)
The mean daily high temperature of Sample 1 is
°.
The mean daily high temperature of Sample 2 is
°.
The mean daily high temperatures of the two samples differ by
°.
The mean daily high temperature of Sample 1 is:
(78 + 82 + 85 + 87 + 90 + 85 + 79 + 86 + 91 + 88) / 10 = 85.1°
The mean daily high temperature of Sample 2 is:
(81 + 79 + 80 + 86 + 89 + 92 + 82 + 88 + 84 + 87) / 10 = 85.8°
The mean daily high temperatures of the two samples differ by:
85.8° - 85.1° = 0.7°
So the mean temperature of Sample 2 is 0.7 degrees Fahrenheit higher than Sample 1.
The data from two random samples of 100 students regarding what pet they own is given below.
Dog Cat Bird Total
Sample 1 54 38 8 100
Sample 2 39 49 12 100
Based on the two samples, what percentage of students own a bird as a pet?
[blank]%
To find the percentage of students who own a bird as a pet, we need to add up the number of students who own birds across both samples and divide by the total number of students across both samples.
The total number of students who own birds is 8 from Sample 1 and 12 from Sample 2, so the total number of students who own birds is:
8 + 12 = 20
The total number of students across both samples is:
100 + 100 = 200
So the percentage of students who own a bird as a pet is:
(20 / 200) x 100% = 10%
Therefore, 10% of the students in the two samples own a bird as a pet.
These are the scores for two randomly selected lacrosse teams. Find the range of the number of goals scored by each team. Based on the range, which team has a more consistent number of goals scored?
Lacrosse Team 1: 6 0 4 17 3 12
Lacrosse Team 2: 23 14 22 14 17 22(2 points)
The range of the number of goals scored by Lacrosse Team 1 is
. The range of the number of goals scored by Lacrosse Team 2 is
. Based on the range, Lacrosse Team
has a more consistent number of goals scored.
The range of the number of goals scored by Lacrosse Team 1 is:
17 - 0 = 17
The range of the number of goals scored by Lacrosse Team 2 is:
23 - 14 = 9
Based on the range of the number of goals scored, Lacrosse Team 2 has a more consistent number of goals scored. The range of their scores is smaller, indicating less variability or difference between their lowest and highest scores.