Pat and Chris both took a spatial abilities test (mean = 80, std. dev. = 8). Pat scores a 76 and Chris scored a 94. What proportion of individuals would score between Pat and Chris?

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A:

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A: x1=64, n1=297x2=12, n1=312

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A: n=1004x=511and c=0.99

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A:

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Q: How large of a sample size is required? Round your critical value to 3 places.

A: Margin of Error=0.02 Probability=0.5  Confidence level=90%  We have to find sample size

Q: 1, 59, 60, 60, 60, 60, 61, 62, 62, 62, 62, 63, 64, 64, 64, 64, 64, 65, 65, 65, 66, 67, 67, 67, 67,…

A: The given data is 1, 59, 60, 60, 60, 60, 61, 62, 62, 62, 62, 63, 64, 64, 64, 64, 64, 65, 65, 65, 66,…

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A: In a simple linear regression model, we have an equation that relates a dependent variable (Y) to an…

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A: n = 1004x = 51199% ci for p(a) best point estimate for p = ? (b) margin of error n: E = ?

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Q: The prevalence of a trait is 76.8%.  In a simple random sample of n = 50, how many individuals are…

A: We have given that  Probability (p) = 76.8% = 0.768 Sample size (n) = 50

Q: 11. Hypothesis Test of Equal Variances. Test the given claim. Use a significance level of a = 0.05…

A: Treatment groupPlacebo

Q: Q7:- Fita straight line to the following data regarding x as the independent variable? X 1 2 3 4 5 6…

A: x12345y46357

Q: If n=470 and p̂ (p-hat) = 0.65, construct a 95% confidence interval.

A: From the provided information, Sample size (n) = 470  p̂ (p-hat) = 0.65 Confidence level = 95%

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A: Suppose in the restaurant we can choose from appetizers,  entrees and  desserts.

Q: Suppose, a biologist wants to model proportion of the leaf area, that is yellow. How would you model…

A: The biologists wants to model proportion of the leaf area that is yellow.

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Q: Determine the coefficient of determination r^2,

A: The correlation coefficient is, r=n∑xy-∑x∑y∑x2-∑x2∑y2-∑y2  =143763-162×284142446-1622146180-2842…

Q: 9. Assume that a simple random sample has been selected from a normally distributed 0.0 population…

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A: By " Bartleby guidelines" Solve first 3 sub part ,i am solving 5 sub part.

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Q: Compute E(X).

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A: x1234p(x)      0.3    0.5    0.1    0.1

Q: A Food Marketing Institute found that 41% of households spend more than $125 a week on groceries.…

A: p=0.41 Population  proportion n= 176   Sample size

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: X' = 96.4SD = 23.7n = 17

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A:

Q: According to a recent survey of 1300 people, 5416 feel that the president is doing an acceptable…

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A: As per our guidelines, we are supposed to answer only 3 sub-parts. a) To find the conditional…