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In a study evaluating the effectiveness of a new medication designed to control high blood pressure, one sample of individuals is given the medicine and a seond sample is given an inactive placebo. Blood pressure is measured for each individual. FOr this study, what is the dependent variable?
Explain the concept of "Regression Analysis", its types (3 types at least), applications and usefulness. Provide real application of its usage.
Suppose we have the following information from a single regression: What is the coefficient of determination? What is the correlation coefficient?
Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis and describe the variables and scale of measurement. Identify whether each factor is fixed or repeating.
Use Are the data statistically significant at the given level of significance? Based on your answers, will you reject or fail to reject the null hypothesis?
Suppose the assembly times follow normal distribution. Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
You are estimating the install hours for an electronics upgrade based on the number of components affected. The upgrade for which you are estimating affects 25 components. Given the following equation, select the correct response from each pair.
Give null and alternative hypotheses for this test in symbolic form.
Mmean of 67 inches and a population standard deviation of 4 inches. For any one person selected at random, what is the probability that their height will be: more than 69 inches?
A sample of 60 night-shift workers showed that the mean number of units produced was 351. At the .05 significance level, is the number of units produced on the night shift larger?
Explain how probability is used in that situation. Identify the type of probability your example best fits by explaining whether it is an independent event or dependent upon something else.
The reason for this difference is not understood. Here are the summary data. Determine if the male scores are significantly higher than the female scores.
She decided to investigate and gather the following sample information. Would it be reasonable for her to conclude that union nurses earn more? Use the .02 significance level. What is the p value?
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