Problem 3: Airline pilots face the risk of progressive hearing loss due to the r

Question

Problem 3: Airline pilots face the risk of progressive hearing loss due to the r of most jet aircraft. Much of the noise comes from air roar which increases at high speeds rather than from the engines. The cockpit noise (in decibels) was measured to the left of the pilots ear on 60 randomly selected flights of one type of aircraft. The computer output below shows the results from a regression model in which the cockpit noise level was predicted by the air speed (in mph). Assume the conditions of the linear regression model are satisfied within the range of air speeds tested. Regression Analysis: Noise versus Speed The regression equation is Noise 65.6+0.0734 Speed 95% CI T-Value P-Value Predictor Constant Speed 10.42 44.77, 86.47) 6.28 0.000 0.073417 0.03098 (0.0115, 0.1354) 2.37 0.021 Coef SE Coef 65.624 S. 11.4088 R-Sq 8.85% R-Sq (adj) = 7.289 -

Explanation / Answer

a) 95% Interval for the slope is (0.0115, 0.1354) and it means that we are 95% Confident that slope will lies in this interval

b) No, it does not support the theory that cockpit noise is related to air speed because slope value is less than 1

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