Question

In: Statistics and Probability

1. drawn bell shaped curved showing rejected/ non rejection with an alpha value of 0.05

 

1. drawn bell shaped curved showing rejected/ non rejection with an alpha value of 0.05

2. determine regression of the line equation y=bx+a

3. Find a and b

4. let 20 be x and what it indicated

5. Then set it up for 95% prediction interval

x

y

xy

x^2

y^2

19

7

133

361

49

23

10

230

529

100

25

3

75

625

9

15

12

180

225

144

67

4

268

4489

16

54

2

108

2916

4

68

2

136

4624

4

21

4

84

441

16

14

8

112

196

64

17

7

119

289

49

48

3

144

2304

9

18

6

108

324

36

=389

=68

=1697

=17323

=500

Solutions

Expert Solution

We have to find

1. drawn bell shaped curved showing rejected/ non rejection with an alpha value of 0.05

2. determine regression of the line equation y=bx+a

3. Find a and b

4. let 20 be x and what it indicated

Answers:

1)

We plot the bell shape curve of response variable y by manually as well as using excel,

for the plot the value of y and corresponding probablity distribution is

y 2 2 3 3 4 4 6 7 7 8 10 12
Distribution 0.064852 0.064852 0.087868 0.087868 0.108162 0.108162 0.122906 0.113455 0.113455 0.095151 0.050188 0.018036

Plot:


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