Math 373
Hw 14 Worked examples and comments.
8.41 To compare the starting salaries of graduates from education and social science, random samples of 50 recent graduates in each major are selected. mea
Math 373
Hw 16 Worked examples and comments.
Hw 308: 8.56, 8.58, 8.60b, 8.62. 8.64.
Page 308.
8.57(2). You wish to estimate a binomial proportion p
correct to within .04 with probability 95%. If p is
Math 373
Hw 29 Worksheet for analysis of variance for regression.
Hw 523: 12.6, 12.10. Rec 523: 12.7. 531: 12.15.
Regression Line: TThe line a + bx which best approximates the data goes through (x, y)
Math 373
Hw 31 Worked examples and comments.
Hw 616: 14.4bcd, 14.8, 14.10, 14.12. Rec 616: 14.3, 14.5, 14.7, 14.13.
Worksheet for Chi-square tests for categorical data Number of categories: k = The ex
Math 373
Hw 27 Worked examples and comments.
Hw 453: 11.29', 11.31'. Rec 453: 11.29, 11.31.
Page 453. 11.29(15). There are three blocks 1, 2, 3 and four treatments A, B, C, D. (a) Fill in the values f
Math 373
Hw 28 Worked examples and comments.
Hw 463: 11.40, 11.42 Rec 463: 11.39, 11.41, 11.43.
Comparing treatments and blocks vs. comparing factors. The rectangle in which plots and data are arrange
Math 373
Hw 24 Worked examples and comments.
Rec 390: 10.29. 10.35. 400: 10.45. 10.49.
Hw 390: 10.29', 10.32. 400: 10.44, 10.46
RECALL. 2 = (n 1)s 2 / 2 . A random sample of n = 25 observations from a
Math 373
Hw 15 Worked examples and comments.
Rec. 302: 8.45, 8.47, 8.51. 308: 8.53.
Hw 302: 8.44, 8.46, 8.50. 308: 8.54.
Page 302. 8.45 Independent samples of n 1= 800 and n 2 = 640 observations are s
Math 373
Hw 17 Examples of hypotheses
6. You wish to show that Buicks survive crashes with less damage than Hondas H0 : Ha : 7. A psychic claims he can predict coin tosses correctly at least 55% of th
Math 373
Hw 6 Worked examples and comments.
from the mean. Henc, in this case, instead of one number, the best we can do is the inequality: P(x ! 15) < .05. Suppose it isn't mound shaped, the best we
Math 373
Hw 3 Worked examples and comments.
Rec. 96: 3.1. 106: 3.7. 126: 4.3, 4.5, 4.7 .
Hw. 96: 3.2. 106:3.7. 126: 4.2, 4.4, 4.6
3DJH. Males and females are divided into three groups A, B, C accordin
Math 373
Hw 5 Worked examples and comments.
remaining 10%. On a particular play, the right guard takes a balanced stance. D Find the probability that the play will go to the left? Answer: .66 E Find t
Math 373
Hw 13 Worked examples and comments.
8.17 In a survey of 1000 adults, 78% felt sports had a positive effect on society. (a) Estimate of the proportion of adults who feel sports have a positive
Math 373
Hw 11 Worked examples and comments.
Hw 252: 7.16, 7.18, 7.22, 7.24. Rec 252: 7.25a, 7.27ab.
Recommended exercises.
Page 252.
7.17
Suppose a random sample of n = 5 observations is selected
fro
Math 373
Hw 9 Worked examples and comments. From Lecture 9
A potter must fill an order for 180 glazed pots. The glazing process cracks 20% of the pots. What is the probability that he can produce 180
Math 373
Hw 12 Worked examples and comments.
Hw 257: 7.30, 7.32, 7.36. Rec 257: 7.29, 7.33abdfg, 7.35abc, 7.37abcd.
Page 257.
Recommended exercises
7.27ab Suppose the distribution of potassium in a ba
Math 373
Hw 7 Worked examples and comments.
Hw 201: 5.40, 5.42, 5.46. Rec 201: 5.41. 5.43, 5.45.
3DJH. Let x be the number of successes observed in a sample of n = 5 items selected from N = 10. Suppos