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Approximating Standard deviation based on Z score.
A population of scores has p = 44. In this population an X value of 40 corresponds to z = - 0.50. describe what is the population standard deviation?
Statistics and Probability, Statistics
The UMUC MiniMart sells five different types of coffee mugs. The manager reports that the five types are equally popular. Suppose that a sample of 500 purchases yields observed counts 110, 100, 110, 100, and 80 for types ...
Discuss the changes in beliefs from the end of the pre-modern period into the modern period, providing two (2) examples. Discuss how these changes have impacted current practice in psychology, providing two (2) examples.
Explain how you would conduct the study you designed in Question as a matched-subjects design. Question:- Design a randomized groups experiment to test the hypothesis that children who watch an hour-long violent televisi ...
Although quasi-experimental designs are widely accepted in behavioral science, some researchers are troubled by the fact that the evidence provided by quasiexperiments is seldom as conclusive as that provided by true exp ...
For each experiment described below, identify any confounds that may be present. (Be careful not to identify things as confounds that are not.) Then, redesign each study to eliminate any confounds that you find. Write a ...
A researcher would like to study BMI levels in adults 20-40 years of age. She selected 9 patients and found their BMI values to be: 38, 19, 25, 26, 29, 18, 34, 32, 30 The mean BMI level of this group of patients is 25.8 ...
Use the inverse transform method to generate a sample of the exponential distribution with parameter θ, which is given by its density 1/θe -x/θ for x ≥ 0 f(x) = 0 for x where θ is a ...
The Total Cholesterol levels of a sample of men aged 35-44 are normally distributed with the mean of 203 milligrams per deciliter and a standard deviation of 37.4 milligrams per deciliter. (a) What percent of men have a ...
Prove that if the result of the men's courtship algorithm yields the same result as the women's courtship algorithm, then this resulting matching is the unique stable matching.
1. What type of sample is used most frequently in behavioral research? 2. Is it true that valid conclusions cannot be drawn from studies that are conducted on convenience samples? Why or why not?
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