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The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile.
Explain why it makes sense for a set of data to have a correlation coefficient of zero when the data show a very definite pattern.
Estimating the individual score using normal distribution - blood pressure higher than what amount?
Find out equation of the line of best fit. Find out r - Is there a strong relationship?
Twelve cases of leukemia are reported in people living in a particular census tract over a 5-year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer-incidence rates?
Compute a 90% confidence interval of the mean for a Weschler intellegence test with mean of 100.00 and standard deviation of 15.00 for a sample of 100 people. Use two decimal places.
Compute mean, standard deviation, coefficient of variation and 5 key percentiles for these data.
Extra college-level training, and rest of the sailors arn't accounted for. How does your sample compare to what you expected to determine? Define null hypothesis.
Is it reasonable to compute that the mean of the population is actually $15,000.
Comparing the experimental and theoretical probabilities, can you say the die used in this experiment is a fair die? Why or why not?
Design an imaginary study or discuss an actual study you've read about that has an experimental or quasi-experimental design that used or would use t-tests or ANOVAs in the data analysis.
A committe studying employer-employee relations proposed that a rating system be adopted. Each employee would rate his or her inmediate supervisor and in turn the supervisor would rate each employee.
Determine the probability of fatal accident over lifetime? Describe your reasoning carefully. Suppose independent events. Why might the supposition of independence be violated?
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