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1. 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. Is this information different from the United Nations report at .01 significance level.
2. A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6% with a standard deviation of 3.9%. The mean on a sample of 8 utility stocks was 10.9% with a standard deviation of 3.5%. At the .05 significance level, is there a difference in the variation of the oil stocks?
Must be clearly defined
1. Hypothesis statements
2. critical value
3. calculated statistics
4. p-value
5. decision to reject or not reject
6. final interpretation of decision #5
According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880.
Find the probability that exactly six tickets are written on a randomly selected day from this distribution.
Test either there is any difference among the given variable also what does the Levene's Test shows. What variable is presented in this table.
A financial adviser is interested in predicting bond yield based on bond terms, i.e., one year, two years, etc. What is the dependent variable?
If the agency is risk neutral, use a decision tree to determine its best course of action.
Assume a sample of 400 American adults were taken. Show the sampling distribution of the proportion of adults who balance their checkbook at least once a month.
At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?
To test the effectiveness of a new type of plastic handcuffs, a law enforcement agency puts the cuffs on a sample of 30 persons who belong to the local weightlifting club. None is capable to break free from the cuffs. What type of sampling techniq..
You want to determine whether or not an observational coding system you've created for ADHD is better as a system with 5 behavioral scales or 3 behavioral scales. What test should be run?
From a population of cereal boxes marked "12 ounces," a sample of 16 boxes is selected and the contents of each box weighed. The sample revealed a mean of 11.7 ounces with a standard deviation of 0.8.
A graphical presentation may accomplish ALL BUT which of the following objectives? Illustrate the amount of variation in the data.
What is the Z score for a person who watches more than 8 hours per day?
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