The speed limit posted on a local highway is 75 mph. Is the average speed on...
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The speed limit posted on a local highway is 75 mph. Is the average speed on that stretch of highway significantly more than 75mph? Forty vehicle's speeds were recorded by speed detection devices. What would be the correct alternative hypothesis? Ha: mu does not equal 75 Ha: xbar does not equal 75 Ha: xbar < 75 Ha: mu < 75 Ha: xbar > 75 Ha: mu > 75 The speed limit posted on a local highway is 75 mph. Is the average speed on that stretch of highway significantly more than 75mph? Forty vehicle's speeds were recorded by speed detection devices. What would be the correct alternative hypothesis? Ha: mu does not equal 75 Ha: xbar does not equal 75 Ha: xbar < 75 Ha: mu < 75 Ha: xbar > 75 Ha: mu > 75
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