QNT 10 QUESTION FOR ANSWER
piedra25
business_statistics_qnt.docx1.
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Two thousand three hundred frequent business travelers are asked which midwestern city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. 121 liked Indianapolis best, 444 liked Saint Louis, 1325 liked Chicago, and the remainder preferred Milwaukee. Develop a frequency table and a relative frequency table to summarize this information. (Round relative frequency to 3 decimal places.) |
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City |
Frequency |
Relative Frequency |
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Indianapolis |
__________ |
__________ |
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St. Louis |
__________ |
__________ |
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Chicago |
__________ |
__________ |
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Milwaukee |
__________ |
__________ |
2.
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Molly's Candle Shop has several retail stores in the coastal areas of North and South Carolina. Many of Molly's customers ask her to ship their purchases. The following chart shows the number of packages shipped per day for the last 100 days. |
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a. |
What is this chart called? |
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b. |
What is the total number of frequencies? |
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Frequencies |
________ |
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c. |
What is the class interval? |
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Class interval |
__________ |
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d. |
What is the class frequency of the 20 up to 25 class? |
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Class frequency |
________ |
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e. |
What is the relative frequency of the 20 up to 25 class? (Round your answer to 2 decimal places.) |
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Relative frequency |
_______ |
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f. |
What is the midpoint of the 15 up to 20 class? (Round your answer to 1 decimal place.) |
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Midpoint |
_______ |
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g. |
On how many days were there 20 or more packages shipped? |
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Number of days |
________ |
3.
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The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting Inc., during the first quarter of 2013. |
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Frequent Flier Miles (000) |
Number of Employees |
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0 up to 5 |
5 |
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5 up to 10 |
13 |
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10 up to 15 |
23 |
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15 up to 20 |
8 |
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20 up to 25 |
4 |
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Total |
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a. |
How many employees were studied? |
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Number of employees |
_______ |
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b. |
What is the midpoint of the first class? (Round your answer to 1 decimal place.) |
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Midpoint |
_______ |
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d. |
A frequency polygon is to be drawn. What are the coordinates of the plot for the last class? |
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4.
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5.
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The frequency distribution representing the number of frequent flier miles accumulated by employees at Brumley Statistical Consulting Inc. is given below. |
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Frequent Flier Miles (000) |
Frequency |
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0 up to 3 |
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5 |
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3 up to 6 |
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12 |
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6 up to 9 |
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23 |
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9 up to 12 |
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8 |
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12 up to 15 |
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2 |
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Total |
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50 |
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a. |
How many employees accumulated less than 12,000 miles? |
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Number of employees |
___________ |
1.
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Some people are in favor of reducing federal taxes to increase consumer spending and others are against it. Two persons are selected and their opinions are recorded. Assume no one is undecided. |
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Find the number of possible outcomes. |
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Number of possible outcomes |
________ |
2.
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A quality control inspector selects a part to be tested. The part is then declared acceptable, repairable, or scrapped. Then another part is tested. |
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Find the number of possible of outcomes of this experiment regarding two parts. |
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Number of possible outcomes |
_______ |
3.
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A survey of 34 students at the Wall College of Business showed the following majors: |
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Accounting |
10 |
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Finance |
5 |
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Economics |
3 |
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Management |
6 |
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Marketing |
10 |
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Major |
Students |
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Accounting |
10 |
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Finance |
5 |
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Economics |
3 |
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Management |
6 |
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Marketing |
10 |
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Total |
34 |
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Suppose you select a student and observe his or her major. |
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a. |
What is the probability he or she is a management major? (Round your answer to 3 decimal places.) |
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Probability |
________ |
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b. |
Which concept of probability did you use to make this estimate? |
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Probability |
__________ |
4.
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A large company must hire a new president. The Board of Directors prepares a list of five candidates, all of whom are equally qualified. Two of these candidates are members of a minority group. To avoid bias in the selection of the candidate, the company decides to select the president by lottery. |
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a. |
What is the probability one of the minority candidates is hired? (Round your answer to 1 decimal place.) |
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Probability |
__________ |
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a. |
A baseball player gets a hit in 30 out of 100 times at bat. The probability is .3 that he gets a hit in his next at bat. |
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EMPIRICAL SUBJECTIVE CLASSIC |
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b. |
A seven-member committee of students is formed to study environmental issues. What is the likelihood that any one of the seven is randomly chosen as the spokesperson? |
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c. |
You purchase 1 of 5 million tickets sold for Lotto Canada. What is the likelihood you will win the $1 million jackpot? |
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d. |
The probability of an earthquake in northern California in the next 10 years above 5.0 on the Richter Scale is .80. |
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EMPIRICAL SUBJECTIVE CLASSIC |
