Project #17594 - BIOSTATS

Math 577                        E4                                    Name ____________

 

 

 

1.     Using a significance level of 0.05, test for independence given the following:

 

 

 

 

Poor

Fair

Good

Below Average

70

65

25

Average

40

80

60

Above Average

10

25

40

 

 

 

Assume the value of the test statistic is 48.06.  Calculate the expected number for poor and below average.

 

 

 

2.     Using a significance level of 0.05, determine if the probabilities for bank robberies are as given:

 

Number of robberies/month

probability

actual

0

0.40

60

1

0.30

35

2

0.20

15

3

0.10

10

 

 

 

3.     Using a significance level of 0.05, test for equal means given the following:

 

Source

Df

SS

MS

F

Factors

  2

240

120.0

30.0

Error

15

  60

    4.0

 

Total

17

300

 

 

 

 

 

4.     Using a significance level of 0.05, perform all necessary tests to test for equal factor A means.

 

Source

DF

SS

MS

F

Factor A

  2

   90

  45.0

  45.0

Factor B

  3

   72

  24.0

  24.0

Interaction

  6

     9

    1.5

    1.5

Error

12

   12

    1.0

 

Total

23

 183

 

 

 

 

 

5.     Compute the slope and intercept for the following data:

 

X

Y

XY

X*X

Y*Y

2

12

24

4

144

7

20

140

49

400

9

23

207

81

529

1

14

14

1

196

5

15

75

25

225

12

24

288

144

576

36

108

748

304

2070

 

 

 

 

 

6.     Using the data in problem 5, calculate the correlation coefficient.

 

 

 

7.     Using a significance level of 0.05, test for a positive correlation coefficient given a sample size of 11 and a sample correlation coefficient of 0.57.

 

 

 

8.     Given the following and a significance level of 0.05, test for a slope of zero.

 

 

 

The regression equation is

 

Y = 5.3 – 0.175 X

 

 

 

Predictor      Coef            SE Coef      T

 

Constant      5.3218            0.1845            28.84

 

X            -0.17499      0.01865      -9.38

 

 

 

Analysis of Variance

 

Source            DF            SS            MS            F

 

Regression                1            11.691            11.691            88.00

 

Error            10              1.329              0.133

 

Total            11            13.020

 

 

 

9.     Using the information in problem 8, form a 95% confidence interval on the slope.

 

 

 

10.  Using a significance level of 0.05, test if the model can be used for prediction.

 

 

 

The regression equation is

 

Y = 65.430 + 16.752 X1 + 11.235 X2

 

 

 

Predictor      Coef            SE Coef      T

 

Constant      65.430            12.134            5.39

 

X1            16.752              6.636            2.52

 

X2            11.235              9.885            1.14

 

 

 

Analysis of Variance

 

Source            DF            SS            MS            F

 

Regression                2            487760      243880      21.1

 

Error              5              57797        11559

 

Total              7            545558

 

 

 

Subject Mathematics
Due By (Pacific Time) 11/27/2013 12:00 pm
Report DMCA
TutorRating
pallavi

Chat Now!

out of 1971 reviews
More..
amosmm

Chat Now!

out of 766 reviews
More..
PhyzKyd

Chat Now!

out of 1164 reviews
More..
rajdeep77

Chat Now!

out of 721 reviews
More..
sctys

Chat Now!

out of 1600 reviews
More..
sharadgreen

Chat Now!

out of 770 reviews
More..
topnotcher

Chat Now!

out of 766 reviews
More..
XXXIAO

Chat Now!

out of 680 reviews
More..
All Rights Reserved. Copyright by AceMyHW.com - Copyright Policy