For a group of 20 items, EX=1452, X² = 144280 and mode = 63.7. Find the Pearsonian coefficient of skewness.
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- Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.For a population with μ = 60 and σ = 8, the X value corresponding to z = -0.50 would be?A study was undertaken to determine whether there was a significant weight (in lb) loss after one year course of therapy for diabetes, and whether the amount of weight (in lb) loss was related to initial weight. The following table gives the initial weight (x) and weight after one year of therapy (y) for 16 newly diagnosed adult diabetic patients.
- A researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.What is the Gini Coefficient and how is it useful for a Caribbean country of your choice.Suppose that a researcher is interested in the average standardized test score for fifth graders in a local school district. The fifth graders at a specific school would comprise a ___________ and their average test score would be a ___________.
- A poll found that 15% of adults do not work at all while on summer vacation. In a random sample of 8 adults, let x represent the number who do not work during summer vacation. Complete parts a through e.Suppose in a given problem about the correlation between height and weight of 20 college students, we come up with an r value of 0.93. with n = 20, what is the degrees of freedom? a. 18b. 19c. 20d. 21Nine students held their breath, once after breathing normally and relaxing for one minute, and once after hyperventilating for one minute. The table indicates how long (in sec) they were able to hold their breath. Is there an association between the two variables?