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An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the price for inflation. His results are given in the following table. Test the economist's claim at the 0.10 level of significance assuming that the population distribution of the pai differences is approximately normal. Let d = (prices in 2019) - (prices in 2018). Average Residential Retail Prices of Electricity ($/kWh)

An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the price for inflation. His results are given in the following table. Test the economist's claim at the 0.10 level of significance assuming that the population distribution of the pai differences is approximately normal. Let d = (prices in 2019) - (prices in 2018). Average Residential Retail Prices of Electricity ($/kWh)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Question 2 of 6, Step 2 of 3 :8: F1 An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the prices for inflation. His results are given in the following table. Test the economist's claim at the 0.10 level of significance assuming that the population distribution of the paired differences is approximately normal. Let d = (prices in 2019) - (prices in 2018). © 2023 Hawkes Learning F2 80 F3 000 000 F4 2018 Average Residential Retail Prices of Electricity ($/kWh) 11.62 18.19 16.62 17.13 15.45 17.86 18.28 15.81 15.11 3/20 Correct F5 Conv Data F6 e MacBook Air - tv ◄◄ F7 2019 13.44 16.30 16.62 16.32 13.61 16.96 16.64 14.00 13.70 A DII F8 Ⓒ F9 1 F10 Submit Answer zoom 4) cricut F11 F12
Transcribed Image Text:Question 2 of 6, Step 2 of 3 :8: F1 An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed between these two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the prices for inflation. His results are given in the following table. Test the economist's claim at the 0.10 level of significance assuming that the population distribution of the paired differences is approximately normal. Let d = (prices in 2019) - (prices in 2018). © 2023 Hawkes Learning F2 80 F3 000 000 F4 2018 Average Residential Retail Prices of Electricity ($/kWh) 11.62 18.19 16.62 17.13 15.45 17.86 18.28 15.81 15.11 3/20 Correct F5 Conv Data F6 e MacBook Air - tv ◄◄ F7 2019 13.44 16.30 16.62 16.32 13.61 16.96 16.64 14.00 13.70 A DII F8 Ⓒ F9 1 F10 Submit Answer zoom 4) cricut F11 F12
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