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A mayor claims that the unemployment rate in his city is 5 %. Many people think that the unemployment rate is higher. So, 130 residents of the city are contacted and it is found that 12 of them are unemployed. Can the mayor's claim be supported to a level of significance of α = .03, test the hypothesis.
A mathematical placement test is given to all entering freshmen at a small college. A student who receives grades below 35 is denied admission to the regular mathematics course and placed in a remedial class.
A sample of 450 responses is shown in worksheet "Proportion". Develop a 90% confidence interval estimation for proportion of "Yes". Then, Enter "Response of Interest" (Yes), and Excel formulas for "Count for Response" (COUNTIF()) and "Sample Size" ..
A United Nations report shows the mean family income for Mexican migrants to the U.S.. is $27,000 per year. A FLOC evaluation of a sample 25 Mexican families units reveals a mean to be $30,000 with a sample standard deviation of $10,000.
Were there significant differences between the groups. Give the relevant stastical data to support your answer and what is the confidence interval associated with your answer to item # 1?
Perform a MANOVA. data set perform a MANOVA. "Group" is your fixed factor, and LDL and HDL are your dependent variables - Exploratory Data Analysis.
What is the probability that 20 people come over the next three days? (c) What is the probability that 8 people come on exactly one of the next three days?
Plot weight versus length and weight versus width. Include the least-squares lines in these plots. Do these relationships appear to be linear? Explain your answer.
A team of scientists is interested in the effects of vitamin A, vitamin C, and vitamin D on the number of offspring born for a speci?c species of mice.
Which of the following is NOT true regarding the normal probability distribution.
In a study of several Chesapeake Bay tributaries, a random sample of nontidal freshwater locations on the Patuxent River was obtained.
the data below are the temperatures on randomly chosen days during a summer class and the number of absences on those
The horizontal 30-N force acts on the handle of the wrench. Determine the moment of this force about point O. Specify the coordinate direction angles , , of the moment axis.
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