Mathematics, 04.10.2019 21:10 ashleyrover11
Nasa performed aerodynamic and acoustic tests of two and three-dimensional airfoil blade sections. these tests were conducted in an anechoic wind tunnel. one input (x) measured was the free-stream velocity, in meters per second. the output (y ) was scaled sound pressure level, in decibels. from this data, we found the following values: µx = 50.86; µy = 124.8; σxy = 13.44; σx = 15.57; σy = 6.90. (a) find the value of the correlation coefficient to 3 decimals. (b) is the linear relationship / association between x and y strong, weak, or is there no relationship? (c) is there a positive linear relationship, negative linear relationship, or no linear relationship?
Answers: 2
Mathematics, 21.06.2019 20:00
Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
Mathematics, 21.06.2019 21:00
Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?
Answers: 2
Mathematics, 22.06.2019 03:00
Usan threw a softball 42 yards on her first try and 5112 yards on her second try. how much farther did she throw the softball on her second try than her first? express your answer in feet and inches. 9 ft 12 in. 28 ft 12 in. 28 ft 6 in.
Answers: 2
Nasa performed aerodynamic and acoustic tests of two and three-dimensional airfoil blade sections. t...
Mathematics, 13.02.2021 20:00
Mathematics, 13.02.2021 20:00
Social Studies, 13.02.2021 20:00
Mathematics, 13.02.2021 20:00
Mathematics, 13.02.2021 20:00
Mathematics, 13.02.2021 20:00
Advanced Placement (AP), 13.02.2021 20:00
English, 13.02.2021 20:00
Mathematics, 13.02.2021 20:00