QUESTION 8 Solve the problem below and fill-in the blanks to show your work. Round all z-scores to the nearest hundredth when necessary. Victor Fries watches a morning news show, where he hears that the mean cost of a refrigerator repair is $180. Assuming these costs are normally distributed with a standard deviation of $15.40, what proportion of refrigerator repairs will cost less than $200? Z-Score: Work: Which image below (A, B, C, or D) looks most similar to the curve you drew? B C Area from the Table: Work: Final Answer:

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Solve for the slope, y-intercept, equation of the trend line, the correlation coefficient, and the coefficient of determination for the following the data set. Show your work and explain the steps you used to solve. Round your answer to the nearest hundredth. Save Goals Percentage 36 9.61 9.42 9.35 DELL 58 66

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…