2.890 A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. Wattage 1,750 1,000 1,250 750 Heater Area 1. 225 234 281 208 4 1,750 1,250 1,250 1,750 1,500 1.258 1.75e 90 213 7. 158 216 255 1,250 1,250 1,750 2,000 1,500 2,000 1,000 1,500 10 220 108 208 11 12 13 89 14 266 15 262 16 61 17 166 18 750 284 1,250 600 19 199 20 50 PpictureClick here for the Excel Data File a. Compute the correlation between the wattage and heating area. Is there a direct or an Indirect relationship? (Round your answer to 4 decimal places.) The correlation of Wattage and Area is The relationship is b. Conduct a test of hypothesis to determine if It is reasonable that the coefficlent Is greater than zero. Use the 0.100 significance level. (Round Intermedlate calculations and flnal answer to 3 decimal places.)

Consider a two-sided CUSUM chart with k=0.5 and h=5. If the process mean shifts by 1σ, then the approximate ARL1 value of this chart is  a. 10.34 b. 9.43 c. 3.94 d. 11.94 e. 4.39

I need help with part b in attached image, please. Thanks.

A mixture of sucrose and water was heated on a hot plate, and the temperature (in °C) was recorded each minute for 20 minutes by three thermocouples. The results are shown in the following table. Time O 1 2 3 4 5 6 7 8 9 71 20 18 29 32 37 36 46 46 56 58 11 10 11231415 167 18 19 20 INR888 gege 64 72 79 84 82 87 98 103 107 103 102 T2 ON 18 22 22 25 37 46 45 44 54 64 69 65 80 74 87 93 90 100 100 103 103 T3 21 11 26 35 33 35 44 43 63 68 62 65 80 75 78 88 91 103 112 107 104 Compute the least-squares line for estimating the temperature as a function of time, using 73 as the value for temperature. (Round the ▼