Mathematics, 30.12.2020 22:00 kieramacphee6216
Hastie and Tibshirani (1990, p. 282) described a study to determine risk factors for kyphosis, which is severe forward exion of the spine following corrective spinal surgery. The age in months at the time of the operation for the 18 subjects for whom kyphosis was present were 12, 15, 42, 52, 59, 73, 82, 91, 96, 105, 114, 120, 121, 128, 130, 139, 139, 157 and for the 22 subjects for whom kyphosis was absent were 1, 1, 2, 8, 11, 18, 22, 31, 37, 61, 72, 81, 97, 112, 118, 127, 131, 140, 151, 159, 177, 206.
A) Fit a logistic regression model using age as a predictor of whether kyphosis is present. Test whether age has a significant effect.
B) Plot the data. Note the difference in dispersion on age at the two levels of kyphosis. Fit the model logit((x = α + Ax + Ax2. Test the significance of the squared age term, plot the fit, and interpret.
Answers: 2
Mathematics, 21.06.2019 20:30
Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints
Answers: 1
Mathematics, 22.06.2019 00:10
Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?
Answers: 1
Mathematics, 22.06.2019 02:00
Are you guys willing to me with these last 8 questions on my homework for math reply to this question that i posted
Answers: 1
Hastie and Tibshirani (1990, p. 282) described a study to determine risk factors for kyphosis, which...
Mathematics, 16.01.2021 22:10
Mathematics, 16.01.2021 22:10
Mathematics, 16.01.2021 22:10
History, 16.01.2021 22:10
English, 16.01.2021 22:10
Business, 16.01.2021 22:10
English, 16.01.2021 22:10
Mathematics, 16.01.2021 22:10