Question

In: Statistics and Probability

Consider the Toluca data (it is in the le named Toluca.txt). Use R to do the...

Consider the Toluca data (it is in the le named Toluca.txt). Use R to do the following.
(a) Read the data and t a linear model. Print the ANOVA table.
(b) Compute 92% con dence interval for b0 and b1 using the appropriate R com-
mand.
(c) Test the hypothesis H0 : b1 = 0 vs Ha : b1 =/= 0 with level = .05. What is
the p-value.
(d) Can you create a con dence interval for the mean amount of time to produce
a batch with Lot.Size = 85. What would it be if Lot.Size= 50. What about
when Lot.Size = 150. Compute the width of each interval. Comment on
their widths.
(e) Tomorrow the factory decides to produce a batch of size 85. Compute a 97%
prediction interval for the time it will take to produce that batch.

(Data)Toluca.txt

Lot.Size Work.Hours

80 399

30 121

50 221

90 376

70 361

60 224

120 546

80 352

100 353

50 157

40 160

70 252

90 389

20 113

110 435

100 420

30 212

50 268

90 377

110 421

30 273

90 468

40 244

80 342

70 323

Solutions

Expert Solution

orchestra answered 1 year ago

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