Mathematics, 27.04.2021 15:40 lyne29
It is assumed that achievement test scores should be correlated with student's classroom performance. One would expect that students who consistently perform well in the classroom (tests, quizzes, etc.) would also perform well on a standardized achievement test (0 - 100 with 100 indicating high achievement). A teacher decides to examine this hypothesis. At the end of the academic year, she computes a correlation between the students achievement test scores (x) and the overall G. P.A. (y) for each student computed over the entire year. The data for her class are provided below.
Achievement(X) G. P.A.(Y)
98 3.6
96 2.7
94 3.1
88 4.0
91 3.2
77 3.0
86 3.8
71 2.6
59 3.0
63 2.2
84 1.7
79 3.1
75 2.6
72 2.9
86 2.4
85 3.4
71 2.8
93 3.7
90 3.2
62 1.6
Estimate β0 and β1. Then, write down the equation of the least squares line.
Find a 90% confidence interval for β1
Answers: 2
Mathematics, 21.06.2019 13:00
1. what are the missing reasons in the proof 2. it's in the second picture and 3
Answers: 1
Mathematics, 21.06.2019 14:40
Write the sentence as an equation. 6 fewer than the quantity 140 times j equals 104
Answers: 2
Mathematics, 22.06.2019 00:00
Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
It is assumed that achievement test scores should be correlated with student's classroom performance...
Physics, 19.11.2020 20:30
Biology, 19.11.2020 20:30
English, 19.11.2020 20:30
Mathematics, 19.11.2020 20:30
Mathematics, 19.11.2020 20:30
Mathematics, 19.11.2020 20:30
Arts, 19.11.2020 20:30
English, 19.11.2020 20:30
Mathematics, 19.11.2020 20:30
Biology, 19.11.2020 20:30