Math homework help
Please record your answer in the table below.
1. | 2. | 3. |
4. | 5. | 6. |
7. | 8. | 9. |
10. | 11. | 12. |
13. | 14 | 15. |
Bonus #1 | Bonus #2 |
|
Construct a frequency table.
1. The following is the number of hours students studied per week on average. Use five intervals, starting with 0 – 4.
2 9 14 19 20 21 18 10 5 2
5 13 17 24 15 13 4 9 14 19 1) _____________
Provide an appropriate response.
2. Given the frequency distribution below, what is the probability of the hourly wage of a person chosen at random from the sample being less than $4.495?
Hourly Wage of Part-time Fast Food Service Workers
2) _____________
Construct a bar graph of the given frequency distribution.
3. The frequency distribution indicates the height in feet of persons in a group of 54 people.
3) _____________
Construct a pie graph, with sectors given in percent, to represent the data in the given table.
4.
4) _____________
Provide an appropriate response.
5. Find the mean for the following grouped data.
Interval | Frequency |
5.5-9.5 | 3 |
9.5-13.5 | 1 |
13.5-17.5 | 5 |
17.5-21.5 | 7 |
21.5-25.5 | 4 |
5) _____________
6. Find the median for the following grouped data.
Interval | Frequency |
2.5-4.5 | 1 |
4.5-6.5 | 8 |
6.5-8.5 | 4 |
8.5-10.5 | 5 |
10.5-12.5 | 3 |
6) _____________
Which single measure of central tendency – mean, median, or mode – would you say best describes the given set of measurements?
7. 7) _____________
Provide an appropriate response.
8. Here are the commutes (in miles) for a group of six students. Find the standard deviation.
14.7 16.3 34.0 33.7 22.6 16.0
Round to two decimal places. 8) _____________
9. What proportion of the following sample of ten measurements lies within 2 standard deviations of the mean?
9) _____________
10. The test scores of 40 driver license applicants are summarized in the frequency table below. Find the standard deviation.
Round your answer to one decimal place. 10) _____________
11. Here are the prices for 8 different MP3 players. Find the range.
$195 $358 $201 $276 $161 $301 $387 $128
11) _____________
Evaluate for the given values of n, x, and p.
12. n = 30, x = 12, p = 0.20 12) _____________
Provide an appropriate response.
13. If a baseball player has a batting average of 0.420, what is the probability that the player will get at least 2 hits in the next four times at bat? 13) _____________
14. In a certain college, 33% of the math majors belong to foreign student. If 10 students are selected at random from the math majors, that is the probability that no more than 6 are foreign? 14) _____________
15. According to a college survey, 22% of all students work full time. Find the mean for the random variable X, the number of students who work full time in samples of size 16.
Find the mean of the binomial distribution. 15) _____________
1. BONUS PROBLEM #1 (5 points)
1. The register of a college recorded the amount of time each student spent waiting in line during peak registration hours one Monday. The frequency table below summarizes the results. Find the standard deviation. Round your answer to one decimal place.
Bonus Problem #2 (5 points)
Construct a histogram for the binomial distribution P(x) = , and compute the mean and standard deviation.
1. n = 6, p = 1) _____________
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