Question: O The Texas State Patrol thinks the average speed between Dallas and Austin is more than 70 miles per hour. To test the belief,

O The Texas State Patrol thinks the average speed between Dallas and

O The Texas State Patrol thinks the average speed between Dallas and Austin is more than 70 miles per hour. To test the belief, they randomly clock 85 cars on the highway and finds that the sample mean is 76,4 and standard deviation to be 5.4 mph. Test the claim at (15 points)

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