the critical value is 7.81 and the test statistic is 148.33, what can we conclude?

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A: Given that the sample size is n=25. That is less than 30. The mean and the standard deviation of the…

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Q: If the P-value is 0.003 and the level of significance , , is 0.05 in a hypothesis test for a mean,…

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Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…

A: Givenstandard deviation(σ)=12Marign of error(E)=7c=99%α=1-0.99=0.01α2=0.005zα2=z0.005=2.5758   (from…

Q: 20 out of 200 men randomly selected in a region and 30 out of 300 women are against vaccination.…

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Q: For a population with ? = 80 and ? = 12, what is the z score corresponding to X = 92? +1.20+12.00…

A: where:- is the value from the population (in this case, X = 92)- is the mean of the population (in…

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Q: Would a sophomore year statistics class students’ average age be a good Point Estimator(This is a…

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Q: If the t-statistic for a variable is -1.74, is the variable statistically significant?   No   Yes

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Q: The mean GPA for 138 residents of the local apartment complex is 1.9. What is the best point…

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Q: A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean is found to…

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Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

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Q: One sample of n = 4 scores has a mean of M = 12, and a second smaple with n = 6 scores has a mean of…

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Q: Suppose you are conducting a hypothesis test to determine whether the mean of a normal population is…

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Q: What is the mean absolute deviation of 1, 5, 8, & 10? Show your solution

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Q: What other options are there to guarantee the accuracy of the data collected in the field?

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Q: uppose you have the population value 50 and 80 and that their corresponding z-scores respectively.…

A: Given Data: Population value=50 and 80   we also know the corresponding z-score

Q: Given a data point x, what does the z-score tell us about x?

A: Solution: The Z score is also called as standard curve it tell us that how far from the data points…

Q: FIND 90% CONFIDENCE INTERVAL FOR THE DIFFERENCE IN POPULATION PROPORTIONS Pf -Pm .

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Q: In terms of skewness, what does it mean if more values are concentrated above the mean? In this…

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Q: A sample of n=11 scores has a mean of M=9. If one new person with a score of X=4 is added to the…

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Q: ple of n = 15 scores has a mean of M = 6.  One person with a score of X = 22 is added to the sample.…

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Q: The mean GPA for 102 residents of the local apartment complex is 1.8 What is the best point estimate…

A: Solution: Given information:  n = 102 Sample size  x = 1.8 Sample mean