1. To determine if gas prices are higher on Saturday than Wednesday. Tom chooses
ID: 3055430 • Letter: 1
Question
1. To determine if gas prices are higher on Saturday than Wednesday. Tom chooses a random sample of 30 gas stations in his city and determines the gas prices on Wednesday and on Saturday for the 30 gas stations. Which test should Tom use for his data? O A. One-Way ANOVA Test O B. Two-Sample Mean or Independent Mean T-Test ° C. One-Sample Mean T-Test O D. One-Sample Proportion Z-Test 0 E, Matched Pairs or Paired T-Test 2. Tom wants to determine if the average gas prices differ between Edmond, Oklahoma City and Putman City. He randomly selects 20 gas stations for each of the cities and compares the average has prices between the three cities. Which test should Tom use for his data? A. 0 B. One-Sample Proportion Z-Test Matched Pairs or Paired T-Test C. One-Sample Mean T-Test D. One-way ANOVA Test 0 E. Two-Sample Mean or Independent Mean T-Test 3. Tom wants to know if the gas prices are higher in Edmond Oklahoma than they are in Oklahoma City. He randomly selects 20 gas stations in Edmond and 20 gas stations in Oklahoma City and compares the average gas prices between the two cities. Which test should Tom use for his data? 0 A. Two-Sample Mean or Independent Mean T-Test O B. One-Way ANOVA Test O C. One-Sample Proportion Z-Test ( D. Matched Pairs or Paired T-Test 0 E. One-Sample Mean T-Test 4. Tom wants to determine what proportion of gas stations have gas without Ethanol. He randomly selects 300 gas stations and determines if they have Ethynol free gas. He then determines if more than a quarter of them have Ethanol free gas. Which test should Tom use for his data? O A. One-Sample Mean T-Test B. Two-Sample Mean or Independent Mean T-Test C. One-Way ANOVA Test O D. One-Sample Proportion Z-Test O E. Matched Pairs or Paired T-TestExplanation / Answer
1) option E is correct ; as same gas station is used for both days
2) option D
3) option A is correct
4) option D is correct
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