Con?dence intervals-least-squares

Reference no: EM13965335

Problem 1:

The following data represent survival time in days after a heart transplant and patient age in years at the time of transplant for 10 randomly selected patients.

Age at transplant	28	41	46	53	39	36	47	29	48	44
Survival time, in days	7	278	44	48	406	382	1995	176	323	1846

(a) Find the least-squares line appropriate for these data.

(b) Plot the points and graph the line.

(c) Calculate the 95% con?dence intervals for β0 and β1, respectively.

Reference no: EM13965335

Questions Cloud

Determining the random sample of height : The data given below are from a random sample of height (in inches) and weight (in pounds) of seven basketball players.

Determining the prediction interval : Obtain a 95% prediction interval for x = 92 and interpret its meaning.

Compute the total cost per equivalent whole unit : Compute the cost per equivalent unit for materials, for labor, and for overhead. Compute the total cost per equivalent whole unit.

What is capital''s after-tax wacc : Assume that the firm's marginal tax rate is 40 percent. (Round intermediate calculations to 4 decimal places, e.g. 1.2514 and final answer to 2 decimal places, e.g. 15.25%.)After tax WACC = %

Con?dence intervals-least-squares : The following data represent survival time in days after a heart transplant and patient age in years at the time of transplant for 10 randomly selected patients.

What is diffraction angle for the first-order image produced : What is the diffraction angle for the first-order image produced by a transmission grating with 5800 lines/cm illuminated by monochromatic light with a wave length of 4920 angstroms?

Compute the cost of the units transferred : Compute the cost of the units transferred to the next department during the period and the cost of ending work in process inventory.

Find the line density of the transmission grating : A transmission grating is used to study the spectral region extending from 480 nm to 500 nm. The angular spread of this region is 20 degrees in the third order. Find the line density (number of lines per centimeter) of the transmission grating.

Describe four major groups of controls on the oscilloscope : Describe the four major groups of controls on the oscilloscope and the purpose of each group. If you are having difficulty obtaining a stable display, which group of controls should you adjust?

User Account

All Pages