Use the equation of the least-squares line humerus length = -3.66 + (1.197 x femur length) %3D to predict the humerus length for a fossil with a femur 80 cm long. (Give your answer as an exact number.) ст humerus length:
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- If your graphing calculator is capable of computing a least-squares sinusoidal regression model, use it to find a second model for the data. Graph this new equation along with your first model. How do they compare?A psychologist wants to determine whether there is a relationship between how long it takes a subject to complete a manual task and the number of hours of sleep the subject had the night before. The results from the study of 10 people are given in the following table. Find the equation of the least-squares line for these data.Find the equation of the least-squares line for the ordered pairs in Table 12.8a.
- The following table shows the length, in centimeters, of the humerus and the total wingspan, in centimeters, of several pterosaurs, which are extinct flying reptiles. (A graphing calculator is recommended.) (a) Find the equation of the least-squares regression line for the data. (Where × is the independent variable.) Round constants to the nearest hundredth. y= ? (b) Use the equation from part (a) to determine, to the nearest centimeter, the projected wingspan of a pterosaur if its humerus is 52 centimeters. ? cmA Find the equation of the least squares line for the data. Round constants to the nearest thousandth B. Use the equation from part A to predict the retail price of a 2010 Corvette with an odometer reading of 30.000.E) Use the original least squares line to predict the gestation period of a human being, assuming a longevity of 75 years. F) why does your answer for part (e) differ so much from the average gestation period of a human (280 days)?
- The least squares regression line given by the formula y=9x+7.5 what would the predictied cost be for a family of 8The following table with the birth weights and pounds, x, and the links and inches, why, for a set of newborn babies at local hospital. Find an equation of the least squares regression line round your answer to three decimal places if necessary.The quadratic model for the given data is wrong.
- Find the equation of the least-squares line for the stride length and speed of camels given in the table below. Use the equation of the least-squares line from to predict the average speed (in meters per second) of a camel with a stride length of 3.7 meters. Round your results to the nearest tenth of a meter per second.A group of Ecologist are examining the effect speed of prey (twips per second) and length of prey (twips X 100) have on the time (in seconds) required to catch the prey. a.) What is the least squares regression line? b.) Predict the catch time for an animal of prey whose length is 6 and whose speed is 50.An airline has determined that the relationship between the number of passengers on a flight and the total weight of luggage stored in the baggage compartment can be estimated by the least squares regression equation y= 217+22x. Predict the weight of luggage for a flight with 72 passengers. Answer: ? pounds