11. For a population u = 48 and o = 8, find the x value that corresponds to each of the following z scores (hint: you may not need to make many calculations): %3D a. -.25 b. -1.50 12 For a ponulation For a nonulation u -6andG- 12 find the y value the corresponds to
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- For a population with u = 34 and o = 8, what is the X value corresponding to z = -0.50?A sample, with M=42 and n=64, is selected from a population with a μ=48 and σ=16. Would this sample be considered extreme and unrepresentative for this population?A sample, from a population has a μ = 15 and σ = 24, has M = 13. If the sample corresponds to a z-score of -.50, how many scores were in the sample?
- 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 ___________.10 veterans who suffer from PTSD are tested before and after taking an anti-anxiety medication thought to reduce PTSD symptoms. How do I report my findings in APA format? Before condition (M=52, SD= 13.4, SE=4.228) After condition (M=43, SD=13.4, SE=4.243) t(9)=1.581, p >0.05, d=0.500.Two car hire firms A and B have the following records of number of cars together with records of breakdown per car for the year 2015. The A firm claims that from the figures, its cars are more reliable. Test this claim at 5% level ofsignificance.
- If N = 18 and α = 0.052 tailed, the value of Tcrit is _________.Suppose we want to estimate the annual high temperatures of the hottest major cities in the United States. Below is data from 12 cities with the average annual temperature taken from 1971 to 2000 City Temperature (Fahrenheit) Phoenix, Arizona 87.2 Miami, Florida 84.3 Orlando, Florida 82.8 Riverside, California 80.9 Austin, Texas 79.8 Houston, Texas 79.7 San Antonio, Texas 80.3 Las Vegas, Nevada 80.1 Jacksonville, Florida 79.3 New Orleans, Louisiana 78.2 Tampa, Florida 81.7 Los Angeles, California 75.2 What's the population for this study? What's the sample for this study?Strack, martin and Stepper (1988) reported that people rate cartoons as funnier when holding a pen in their teeth (Which force them to frown.) a researcher attempted to replicate this result using a sample of n = 30 adults between the ages of 32-37. For each person, the researcher recorded the difference between the rating obtained while smiling and the rating obtained while frowning. On the average cartoons were rated as funnier when the participants were smiling, with an average difference of 2.6 with SS = 200. a) Do the data indicate that the cartoons are rated significantly funnier when the participants are smiling? Use a two tailed test with α = 0.05. (Use the four logical steps in hypothesis testing) b) Compute for r2 to measure the size of the treatment effect. c) Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research paper.
- 2/12 decide if a 90% T interval can be constructed about the population mean. If not, state the reason why.Based on Chebyshev’s Rule, given that = 206, and s = 10, which of the following statement is true? 95% of the data distribution is within 176 to 236 5% of the data distribution is within 186 to 226 89% of the data distribution is within 196 to 236 75% of the data distribution 186 to 226The average jump height of a normal man is said to be 18 inches. 15 normal males are selected and their jump height is measured.15.8 16.7 18.8 19.1 17.718.8 18.9 17.6 16.9 15.518.6 19.3 20.5 18.6 18.4In inches.With a 0.05 level of significance, what conclusion can you derive?