An airplane has an airspeed of 450 km/h bearing 49° north of east. The wind velocity is 80 km/h in the direction 34° north of west. Find the resultant velocity representing the path of the airplane with respect to the ground.
What is the actual ground speed of the aircraft?
3/
19
km/h
(Do not round until the final answer. Then round to the nearest tenth as needed.)
Inl
0
Hul
4
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Abottled water distributor wants to estimate the amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company. the water bottling company’s specifications state that the standard deviation of the amount of water is equal to 0.02 gallon. a random sample of 50 bottles is selected, and the sample mean amount of water per 1-gallon bottle is 0.995 gallon a. construct a 99% confidence interval estimate for the popula-tion mean amount of water included in a 1-gallon bottle. b. on the basis of these results, do you think that the distributor has a right to complain to the water bottling company? why? c. must you assume that the population amount of water per bottle is normally distributed here? explain. d. construct a 95% confidence interval estimate. how does this change your answer to (b)?