Maths-
SAT
Easy
Question
An ecologist selected a random sample of 30 prairie dogs from a colony and found that the mean mass of the prairie dogs in the sample was 0.94 kilograms (kg) with an associated margin of error of 0.12 kg. Which of the following is the best interpretation of the ecologist’s findings?
- All prairie dogs in the sample have a mass between 0.82 kg and 1.06 kg.
- Most prairie dogs in the colony have a mass between 0.82 kg and 1.06 kg.
- Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the sample.
- Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the colony.
The correct answer is: Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the colony.
Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the colony.
Related Questions to study
maths-
The front row of an auditorium has 10 seats. There are 50 rows in total. If each row has 2 more seats than the row before it, which expression gives the total number of seats in the last row?
The front row of an auditorium has 10 seats. There are 50 rows in total. If each row has 2 more seats than the row before it, which expression gives the total number of seats in the last row?
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The front row of an auditorium has 10 seats. There are 50 rows in total. If each row has 2 more seats than the row before it, which expression gives the total number of seats in the last row?
The front row of an auditorium has 10 seats. There are 50 rows in total. If each row has 2 more seats than the row before it, which expression gives the total number of seats in the last row?
maths-sat
maths-
The gas mileage M(s), in miles per gallon, of a car traveling s miles per hour is modeled by the function below, where 20 ≤ s ≤ 75.
According to the model, at what speed, in miles per hour, does the car obtain its greatest gas mileage?
The gas mileage M(s), in miles per gallon, of a car traveling s miles per hour is modeled by the function below, where 20 ≤ s ≤ 75.
According to the model, at what speed, in miles per hour, does the car obtain its greatest gas mileage?
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During mineral formation, the same chemical compound can beco me different minerals depending on the temperature and pressure at the time of formation. A phase diagram is a graph that shows the conditions that are needed to form each mineral. The graph above is a portion of the phase diagram for aluminosilicates, with the temperature T, in degrees Celsius (°C), on the horizontal axis, and the pressure P, in gigapascals (GPa), on the vertical axis.
P = −0.00146T + 1.11
An equation of the boundary line between the andalusite and sillimanite regions is approximated by the equation above. What is the meaning of the T-intercept of this line?
During mineral formation, the same chemical compound can beco me different minerals depending on the temperature and pressure at the time of formation. A phase diagram is a graph that shows the conditions that are needed to form each mineral. The graph above is a portion of the phase diagram for aluminosilicates, with the temperature T, in degrees Celsius (°C), on the horizontal axis, and the pressure P, in gigapascals (GPa), on the vertical axis.
P = −0.00146T + 1.11
An equation of the boundary line between the andalusite and sillimanite regions is approximated by the equation above. What is the meaning of the T-intercept of this line?
maths-sat
maths-
The budget for a school band was $8,000 in 2010. The budget decreased by 15% from 2010 to 2011 and then increased by 22% from 2011 to 2012. Which of the following expressions represents the budget, in dollars, for the school band in 2012?
The budget for a school band was $8,000 in 2010. The budget decreased by 15% from 2010 to 2011 and then increased by 22% from 2011 to 2012. Which of the following expressions represents the budget, in dollars, for the school band in 2012?
maths-sat
maths-
The velocity v, in meters per second, of a falling object on Earth after t seconds, ignoring the effect of air resistance, is modeled by the equation v = 9.8t. There is a different linear relationship between time and velocity on Mars, as shown in the table below.
|
Time (seconds) |
Velocity on Mars (meters per second) |
|
0 |
0 |
|
4 |
14.8 |
|
8 |
29.6 |
The velocity v, in meters per second, of a falling object on Earth after t seconds, ignoring the effect of air resistance, is modeled by the equation v = 9.8t. There is a different linear relationship between time and velocity on Mars, as shown in the table below.
|
Time (seconds) |
Velocity on Mars (meters per second) |
|
0 |
0 |
|
4 |
14.8 |
|
8 |
29.6 |
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|
Data set A |
25,550 |
40,430 |
49,150 |
62,590 |
73,670 |
118,780 |
126,040 |
|
Data set B |
22,860 |
55,020 |
173,730 |
300,580 |
358920 |
456,170 |
603,300 |
data sets in the table above?
|
Data set A |
25,550 |
40,430 |
49,150 |
62,590 |
73,670 |
118,780 |
126,040 |
|
Data set B |
22,860 |
55,020 |
173,730 |
300,580 |
358920 |
456,170 |
603,300 |
data sets in the table above?
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|
Roof type |
||||
|
|
Asphalt shingle |
Slate |
Cedar shake |
Total |
| Single story |
9 |
4 |
2 |
15 |
| Two story |
20 |
10 |
3 |
33 |
| Total |
29 |
14 |
5 |
48 |
|
Roof type |
||||
|
|
Asphalt shingle |
Slate |
Cedar shake |
Total |
| Single story |
9 |
4 |
2 |
15 |
| Two story |
20 |
10 |
3 |
33 |
| Total |
29 |
14 |
5 |
48 |
maths-sat
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The line graph above shows the average price of one metric ton of oranges, in dollars, for each of seven months in 2014.
Which of the following is closest to the median price, in dollars, of the seven recorded prices of one metric ton of oranges?
The line graph above shows the average price of one metric ton of oranges, in dollars, for each of seven months in 2014.
Which of the following is closest to the median price, in dollars, of the seven recorded prices of one metric ton of oranges?
maths-sat
maths-
Total Home Runs for Selected Years, 1903–2013
The scatterplot above shows the total number of home runs hit in major league baseball, in ten-year intervals, for selected years. The line of best fit for the data is also shown. Which of the following is closest to the difference between the actual number of home runs and the number predicted by the line of best fit in 2003?
Total Home Runs for Selected Years, 1903–2013
The scatterplot above shows the total number of home runs hit in major league baseball, in ten-year intervals, for selected years. The line of best fit for the data is also shown. Which of the following is closest to the difference between the actual number of home runs and the number predicted by the line of best fit in 2003?
maths-sat
maths-
The number of people who rode a certain bus each day of a week is shown in the table below.
|
Day |
Number of riders |
| Monday |
612 |
| Tuesday |
798 |
| Wednesday |
655 |
| Thursday |
773 |
| Friday |
808 |
| Saturday |
480 |
| Sunday |
229 |
The number of people who rode a certain bus each day of a week is shown in the table below.
|
Day |
Number of riders |
| Monday |
612 |
| Tuesday |
798 |
| Wednesday |
655 |
| Thursday |
773 |
| Friday |
808 |
| Saturday |
480 |
| Sunday |
229 |
maths-sat
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b(t) = 100(1.11)t
The given function b models the number of flour beetles in a certain area, where t represents the number of days after June 1. Which of the following is the best interpretation of the number 1. 11 in this context?
b(t) = 100(1.11)t
The given function b models the number of flour beetles in a certain area, where t represents the number of days after June 1. Which of the following is the best interpretation of the number 1. 11 in this context?
maths-sat
maths-
The graph of y = 2x - a is shown, where a is a constant. What is the value of a ?
The graph of y = 2x - a is shown, where a is a constant. What is the value of a ?
maths-sat
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Which of the following is( are) an x-intercept of the graph of 
in the xy-plane?
I. (-3, 0)
II. (2, 0)
III. (0, 0)
Which of the following is( are) an x-intercept of the graph of in the xy-plane?
I. (-3, 0)
II. (2, 0)
III. (0, 0)
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The function f is a linear function. They-intercept of the graph of y = f(x) in the xy-plane is (0, -12). What is the y-intercept of the graph of y = f(x) + 2?
The function f is a linear function. They-intercept of the graph of y = f(x) in the xy-plane is (0, -12). What is the y-intercept of the graph of y = f(x) + 2?
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