SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of...
SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of Internet users. Find the mean and the standard deviation. (Round squared deviations to nearest whole number and final answer to 2 decimal places.)
| Age (years) | Frequency | ||
| 10 up to 20 | 3 | ||
| 20 up to 30 | 7 | ||
| 30 up to 40 | 18 | ||
| 40 up to 50 | 20 | ||
| 50 up to 60 | 12 | ||
|
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SCCoast, an Internet
provider in the Southeast, developed the following frequency
distribution on the age of...
SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of...
SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of Internet users. Find the mean and the standard deviation. (Round squared deviations to nearest whole number and final answer to 2 decimal places.) Age (years) Frequency 10 up to 20 3 20 up to 30 7 30 up to 40 18 40 up to 50 20 50 up to 60 12 Mean Standard deviation
Age, Deviation, Squared Deviation, Frequency, Frequency x Squared Deviation EXERCISE #2 You fill in the 3rd...
Age, Deviation, Squared Deviation, Frequency, Frequency x
Squared Deviation
EXERCISE #2 You fill in the 3rd column of this table. The first entry is done for you. Commas are not necessary. Frequency Table for Data Set B Age (years) Frequency Age x Frequency 18 19 20 21 1782 105 45 31 12 28 10 15 16 1995 900 651 23 24 25 26 27 28 29 30 31 35 644 2 40 3 75 416 2 16 280 2 32...
The IRS was interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 41 public accounting firms with 10 or fewer employees in the Dallas-Fort Wort...
The IRS was interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 41 public accounting firms with 10 or fewer employees in the Dallas-Fort Worth area. The following frequency table reports the results of the study. 12.5 Number of Clients points 10 up to 14 14 up to 18 18 up to 22 22 up to 26 26 up to 30 12 eBook 12 Print References Estimate the mean and the standard...
Approximate the mean of the frequency distribution for the ages of the residents of a town....
Approximate the mean of the frequency distribution for the ages of the residents of a town. Age Frequency 0-9 40 10-19 30 20-29 18 30-39 24 40-49 33 50-59 53 60-69 41 70-79 16 80-89 3 The approximate mean age is nothing years. (Round to one decimal place as needed.)
30 The manager of the local Walmart Superright is studying the number of items purchased by...
30 The manager of the local Walmart Superright is studying the number of items purchased by customers in the evening hours. Listed below is the number of items for a sample of 30 customers. 15 12 5 8 4 6 6 7 11 9 8 14 9 12 5 4 10 6 18 10 6 10 11 5 10 9 13 12 13 5 2 01:40:06 Click here for the Excel Data File a. Find the mean and the median...
The following frequency distribution shows the ages of India’s 40 richest individuals. One of these individuals...
The following frequency distribution shows the ages of India’s 40 richest individuals. One of these individuals is selected at random. Ages Frequency 30 up to 40 3 40 up to 50 8 50 up to 60 15 60 up to 70 9 70 up to 80 5 SOURCE: http://www.forbes.com. a. What is the probability that the individual is between 50 and 60 years of age? (Round your answer to 3 decimal places.) b. What is the probability that the individual...
The following frequency distribution shows the ages of India’s 59 richest individuals. One of these individuals...
The following frequency distribution shows the ages of India’s 59 richest individuals. One of these individuals is selected at random. Ages Frequency 30 up to 40 14 40 up to 50 14 50 up to 60 5 60 up to 70 15 70 up to 80 11 a. What is the probability that the individual is between 60 and 70 years of age? (Round your answer to 3 decimal places.) b. What is the probability that the individual is younger...
The IRS was interested in the number of individual tax forms prepared by small accounting firms....
The IRS was interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 50 public accounting firms with 10 or fewer employees in the Dallas-Fort Worth area. The following frequency table reports the results of the study. Number of Clients Frequency 40 up to 70 3 70 up to 100 15 100 up to 130 22 130 up to 160 6 160 up to 190 4 Estimate the mean and the standard deviation....
Health issues are a concern of managers, especially as they evaluate the cost of medical insurance....
Health issues are a concern of managers, especially as they evaluate the cost of medical insurance. A recent survey of 150 executives at Elvers Industries, a large insurance and financial firm located in the Southwest, reported the number of pounds by which the executives were overweight. Compute the mean and the standard deviation. (Round squared deviations to nearest whole number and final answer to 2 decimal places.) Pounds Overweight Frequency 0 up to 6 14 6 up to 12 42...
2. Below is a frequency distribution of earnings of 50 contractors in a country. Regarding this...
2. Below is a frequency distribution of earnings of 50 contractors in a country. Regarding this distribution. Frequency Class Interval 0-10 10-20 20-30 30-40 40-50 50-60 Compute the mean, variance, the standard deviation and the Coefficient of variation (CV) of the earnings of these contractors. Compute the skewness of the distribution of earnings of these 50 contractors. Is the distribution positively or negatively skewed? (iii)
Age, Deviation, Squared Deviation, Frequency, Frequency x
Squared Deviation
EXERCISE #2 You fill in the 3rd column of this table. The first entry is done for you. Commas are not necessary. Frequency Table for Data Set B Age (years) Frequency Age x Frequency 18 19 20 21 1782 105 45 31 12 28 10 15 16 1995 900 651 23 24 25 26 27 28 29 30 31 35 644 2 40 3 75 416 2 16 280 2 32...
The IRS was interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 41 public accounting firms with 10 or fewer employees in the Dallas-Fort Worth area. The following frequency table reports the results of the study. 12.5 Number of Clients points 10 up to 14 14 up to 18 18 up to 22 22 up to 26 26 up to 30 12 eBook 12 Print References Estimate the mean and the standard...
30 The manager of the local Walmart Superright is studying the number of items purchased by customers in the evening hours. Listed below is the number of items for a sample of 30 customers. 15 12 5 8 4 6 6 7 11 9 8 14 9 12 5 4 10 6 18 10 6 10 11 5 10 9 13 12 13 5 2 01:40:06 Click here for the Excel Data File a. Find the mean and the median...
2. Below is a frequency distribution of earnings of 50 contractors in a country. Regarding this distribution. Frequency Class Interval 0-10 10-20 20-30 30-40 40-50 50-60 Compute the mean, variance, the standard deviation and the Coefficient of variation (CV) of the earnings of these contractors. Compute the skewness of the distribution of earnings of these 50 contractors. Is the distribution positively or negatively skewed? (iii)
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