Brianni decided to ride her bike from her home to visit her friend adam. two miles away from home, her bike got a flat tire and she had to walk the remaining three miles to adam's home. she could not repair the tire and had to walk all the way back home. how many more miles did brianni walk than she rode?

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The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score