Mathematics, 09.11.2020 20:50, alannaamarriee
Suppose a local university researcher wants to build a linear model that predicts the freshman year GPA of incoming students based on high school SAT scores. The researcher randomly selects a sample of 40 sophomore students at the university and gathers their freshman year GPA data and the high school SAT score reported on each of their college applications. He produces a scatterplot with SAT scores on the horizontal axis and GPA on the vertical axis. The data has a linear correlation coefficient of 0.506701. Additional sample statistics are summarized in the table below. Sample Variable Sample standard deviation mean Variable description high school SAT score freshman year GPA x= 1504.291401 sx 105.782904 у y = 3.240805 Sy = 0.441205 r=0.506701 slope = 0.002113 Determine the y-intercept, a, of the least-squares regression line for this data. Give your answer precise to at least four decimal places. a =
Answers: 2
Mathematics, 21.06.2019 23:30, ashiteru123
The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january. what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed. use 3.14 for π .
Answers: 1
Mathematics, 22.06.2019 00:30, lisettetorres01
You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25
Answers: 2
Mathematics, 22.06.2019 03:40, jojojojo5730
How far does the wijw nj jh jevh dhhb vte hbhe gvbf5wf bjehn v
Answers: 1
Suppose a local university researcher wants to build a linear model that predicts the freshman year...
Physics, 03.07.2020 22:01