Compute the mean of 68, 14, 39, 38, 42, 90.
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Compute the mean of 68, 14, 39, 38, 42, 90.
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- A survey was conducted among the employees of a certain company and they were asked about their weekly travel expenses. A random sample of 20 employees had the following answers: 120, 85, 94, 67, 112, 88, 92, 110, 125, 70, 83, 90, 84, 86, 94, 112, 92, 90, 78, 100 What is the mean weekly travel expenses of the 20 employees?Hand calculated not by any softwareUCLA conducted a survey of more than 263,000 college freshmen from 385 colleges in fall 2005. The results of students' expected majors by gender were reported in The Chronicle of Higher Education (2/2/2006). Suppose a survey of 5,000 graduating females and 5,000 graduating males was done as a follow-up last year to determine what their actual majors were. The results for females are shown in the table below. The second column in the table does not add to 100% because of rounding. Conduct a goodness-of-fit test to determine if the actual college majors of graduating females fit the distribution of their expected majors. (Use a significance level of 0.05.) Major Women - Expected Major Women - Actual Major Art & Humanities 14.0% 670 Biological Sciences 8.4% 410 Business 13.1% 685 Education 13.0% 650 Engineering 2.6% 145 Physical Sciences 2.6% 125 18.9% 975 Professional 13.0% 605 Social Sciences 15 Technical 0.4% 300 Other 5.8% 420 Undecided 8.0% What is the test statistic? (Round your…
- 4) A set of 15 data points has mean 28.2. When one data point is disregarded, the mean of the remaining 14 data points is 27. What is the value of the disregarded data point?UCLA conducted a survey of more than 263,000 college freshmen from 385 colleges in fall 2005. The results of students' expected majors by gender were reported in The Chronicle of Higher Education (2/2/2006). Suppose a survey of 5,000 graduating females and 5,000 graduating males was done as a follow-up last year to determine what their actual majors were. The results for males are shown in the table below. The second column in the table does not add to 100% because of rounding.Conduct a goodness-of-fit test to determine if the actual college majors of graduating males fit the distribution of their expected majors. (Use a significance level of 0.05.) Major Men - Expected Major Men - Actual Major Art & Humanities 11.0% 600 Biological Sciences 6.7% 330 Business 22.7% 1,130 Education 5.8% 305 Engineering 15.6% 800 Physical Sciences 3.6% 175 Professional 9.3% 460 Social Sciences 7.6% 370 Technical 1.8% 90 Other 8.2% 400 Undecided 6.6% 340 Part (e) What…17- How do you find Median for even number of observations under ungrouped method? a. Arrange the data in ascending order and multiply middle two numbers b. Arrange the data in ascending order and find the difference of middle two numbers c. Arrange the data in ascending order and add middle two numbers d. Arrange the data in ascending order and take the average of middle two numbers
- 4.One out of 5 students at a local college says that they skip breakfast in the morning. Find the mean and standard deviation if 10 students are randomly selected.3 A researcher wants to determine the mean income of adults in a particular state. She decides to take a random sample of 1525 citizens with a driver's license from the registry maintained by the Department of Motor Vehicles in that state, and record their incomes. Which one of the following statements is NOT correct? * The sample would be biased since some people without a license may be too poor to own a car and others may choose to use public transportation The sample would not be representative of adults, since teenagers would be included in the sample. Taking a bigger sample from the registry would solve any problems with possible bias People who had recently moved from another state may not yet be included in the DMV registry.6
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