A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wa

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A Consumer Buying Cooperative Tested The Effective Heating Area Of 20 Different Electric Space Heaters With Different Wa 1 (78.69 KiB) Viewed 40 times

A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. A B Area 108 291 100 43 68 181 254 228 126 166 45 237 75 126 249 105 298 212 98 185 Heater wattage Area 1 1,000 2 750 1,500 1,000 1,250 1,500 1,250 750 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1,500 1,500 750 750 1,000 1,750 1,750 1,750 1,750 1.250 750 750 ********************* The correlation of Wattage and Area is Wattage 1000 750 1500 1000 1250 1500 1250 Answer is complete and correct. 0.378 750 1500 1500 750 750 1000 1750 1750 1750 1750 1250 750 750 Click here for the Excel Data File c. Develop the regression equation for effective heating based on wattage. (Negative value should be indicated by a minus sign. a. Compute the correlation between the wattage and heating area. is there a direct or an Indirect relationship? (Round your answer to Round your answers to 3 decimal places.) 4 decimal places.) Answer is complete and correct. 0.0887 The link (relationship) is b. Conduct a test of hypothesis to determine if it is reasonable that the coefficient is greater than zero. Use the 0.050 significance level. (Round Intermediate calculations and final answer to 3 decimal places.) Ho: p≤0: H₁. p> 0 Reject H₂ If t>1.734 direct Do not reject Answer is complete and correct. Ho. It is not reasonable to say the population correlation is negative • The regression equation is: Area Answer is complete but not entirely correct. 137.428 Wattage d. What heating area corresponds with a 1,500-watt heater? (Round your answers to 4 decimal places.) Answer is complete but not entirely correct. Heating area 6,912 3138 116.1318 e. What is the 95% confidence interval of heating the area if the wattage is 1,500? (Round your answers to 4 decimal places.) Answer is complete and correct. 0.018- 213.9542