How many yards are equivalent to inches?
277 items match · Math · Problem-Solving and Data Analysis
Theresa ran on a treadmill for thirty minutes, and her time and speed are shown on the graph above. According to the graph, which of the following statements is NOT true concerning Theresa’s run?
A sample consisting of adults who own televisions was selected at random for a study. Based on the sample, it is estimated that of all adults who own televisions use their televisions to watch nature shows, with an associated margin of error of . Which of the following is the most plausible conclusion about all adults who own televisions?
Last year, Cedric had plants in his garden. This year, the number of plants in Cedric’s garden is greater than the number of plants in his garden last year. How many plants does Cedric have in his garden this year?
The scatterplot shows the relationship between two variables, and . A line of best fit for the data is also shown.
- The scatterplot has 11 data points.
- The data points are in a linear pattern trending down from left to right.
- A line of best fit is shown:
- The line of best fit slants down from left to right.
- 6 points are above the line of best fit.
- 5 points are below the line of best fit.
- The line of best fit goes through the following approximate coordinates:
- (28 comma 6)
- (33 comma 1.5)
At , which of the following is closest to the y-value predicted by the line of best fit?
| Country | 2012 | 2013 |
|---|---|---|
| France | 83.0 | 84.7 |
| United States | 66.7 | 69.8 |
| Spain | 57.5 | 60.7 |
| China | 57.7 | 55.7 |
| Italy | 46.4 | 47.7 |
| Turkey | 35.7 | 37.8 |
| Germany | 30.4 | 31.5 |
| United Kingdom | 26.3 | 32.2 |
| Russia | 24.7 | 28.4 |
The table above shows the number of international tourist arrivals, rounded to the nearest tenth of a million, to the top nine tourist destinations in both 2012 and 2013. Based on the information given in the table, how much greater, in millions, was the median number of international tourist arrivals to the top nine tourist destinations in 2013 than the median number in 2012, to the nearest tenth of a million?
Of the 8 planets in our solar system, 4 are considered rocky. If a student randomly selects 1 of those 8 planets as a topic for a report, what is the probability that the selected planet will be rocky?
The dot plots represent the distributions of values in data sets A and B.
- For the dot plot titled Data Set A:
- The number line ranges from 10 to 16 in increments of 1.
- The data for the dot plot are as follows:
- 10: 1 dot
- 11: 4 dots
- 12: 2 dots
- 13: 3 dots
- 14: 2 dots
- 15: 4 dots
- 16: 1 dot
- For the dot plot titled Data Set B:
- The number line ranges from 10 to 16 in increments of 1.
- The data for the dot plot are as follows:
- 10: 2 dots
- 11: 4 dots
- 12: 2 dots
- 13: 1 dot
- 14: 2 dots
- 15: 4 dots
- 16: 2 dots
Which of the following statements must be true?
- The median of data set A is equal to the median of data set B.
- The standard deviation of data set A is equal to the standard deviation of data set B.
An inspector begins a day of work with a large sample of shirts that need to be checked for defects. The inspector works at a constant rate throughout the morning. What type of model is best to model the number of shirts remaining to be checked for defects at any given time throughout the morning?
What is of ?
The scatterplot shows the relationship between two variables, and . A line of best fit is also shown.
- The scatterplot has 10 data points.
- The data points are in a linear pattern trending up from left to right.
- A line of best fit is shown.
- The line of best fit slants up from left to right.
- 1 point is touching the line of best fit.
- 5 points are above the line of best fit.
- 4 points are below the line of best fit.
- The line of best fit passes through the following approximate coordinates:
- (0 comma 3)
- (3 comma 8)
- (7 comma 15)
Which of the following equations best represents the line of best fit shown?
Rectangle A has length 15 and width w. Rectangle B has length 20 and the same length-to-width ratio as rectangle A. What is the width of rectangle B in terms of w ?
Shaquan has 7 red cards and 28 blue cards. What is the ratio of red cards to blue cards that Shaquan has?
The scatterplot above shows data for ten charities along with the line of best fit. For the charity with the greatest percent of total expenses spent on programs, which of the following is closest to the difference of the actual percent and the percent predicted by the line of best fit?
- Data Set A:
- The horizontal axis is labeled Integer. It ranges from 10 to 60 and is divided into 5 equal intervals.
- The vertical axis is labeled Frequency. It ranges from 0 to 12 in increments of 1, with values marked every 2 grid lines.
- The histogram has a skewed right shape.
- The histogram has 4 bins.
- The Frequency data for the 4 bins are as follows:
- 20 to 30: 3
- 30 to 40: 4
- 40 to 50: 7
- 50 to 60: 9
- Data Set B:
- The horizontal axis is labeled Integer. It ranges from 10 to 60 and is divided into 5 equal intervals.
- The vertical axis is labeled Frequency. It ranges from 0 to 12 in increments of 1, with values marked every 2 grid lines.
- The histogram has a skewed right shape.
- The histogram has 4 bins.
- The Frequency data for the 4 bins are as follows:
- 10 to 20: 3
- 20 to 30: 4
- 30 to 40: 7
- 40 to 50: 9
Two data sets of integers each are summarized in the histograms shown. For each of the histograms, the first interval represents the frequency of integers greater than or equal to , but less than . The second interval represents the frequency of integers greater than or equal to , but less than , and so on. What is the smallest possible difference between the mean of data set A and the mean of data set B?
A random sample of 50 people from a town with a population of 14,878 were asked to name their favorite flavor of ice cream. If 7 people in the sample named chocolate as their favorite ice‑cream flavor, about how many people in the town would be expected to name chocolate?
Each vertex of a -sided polygon is labeled with one of the letters through , with a different letter at each vertex. If one vertex is selected at random, what is the probability that the letter will be at the selected vertex? (Express your answer as a decimal or fraction, not as a percent.)
Which expression represents the result of increasing a positive quantity by ?
In a study of cell phone use, 799 randomly selected US teens were asked how often they talked on a cell phone and about their texting behavior. The data are summarized in the table above. If one of the 799 teens surveyed is selected at random, what is the probability that the teen talks on a cell phone daily?
Jeremy deposited x dollars in his investment account on January 1, 2001. The amount of money in the account doubled each year until Jeremy had 480 dollars in his investment account on January 1, 2005. What is the value of x ?
, , , ,
What is the mean of the data shown?
The frequency distribution above summarizes a set of data, where a is a positive integer. How much greater is the mean of the set of data than the median?
A band with members has members who play saxophone. If one band member is selected at random, what is the probability of selecting a band member who plays saxophone?
Tanya earns $13.50 per hour at her part-time job. When she works z hours, she earns dollars. Which of the following expressions gives the amount, in dollars, Tanya will earn if she works
hours?
Which of the following MUST be true?
- Every member of team A completed the race in less time than any member of team B.
- The median time it took the members of team B to complete the race is greater than the median time it took the members of team A to complete the race.
- There is at least one member of team B who took more time to complete the race than some member of team A.