answers N Valid 100 Missing 0 answers Frequency Percent Vali

answers

N

Valid

100

Missing

0

answers

Frequency

Percent

Valid Percent

Cumulative Percent

Valid

not positive

41

41,0

41,0

41,0

positive

59

59,0

59,0

100,0

Total

100

100,0

100,0

T-Test

[DataSet1] C:\\Users\\moma1491\\Downloads\\brakes.sav

One-Sample Statistics

Machine Number

N

Mean

Std. Deviation

Std. Error Mean

1

Disc Brake Diameter (mm)

29

322,007056

,0135824

,0025222

2

Disc Brake Diameter (mm)

29

321,995641

,0143290

,0026608

3

Disc Brake Diameter (mm)

29

322,007988

,0228299

,0042394

4

Disc Brake Diameter (mm)

29

322,001226

,0102380

,0019011

One-Sample Test

Machine Number

Test Value = 322

t

df

Sig. (2-tailed)

Mean Difference

90% Confidence Interval of the Difference

Lower

Upper

1

Disc Brake Diameter (mm)

2,797

28

,009

,0070558

,002765

,011346

2

Disc Brake Diameter (mm)

-1,638

28

,113

-,0043589

-,008885

,000167

3

Disc Brake Diameter (mm)

1,884

28

,070

,0079877

,000776

,015200

4

Disc Brake Diameter (mm)

,645

28

,524

,0012262

-,002008

,004460

Questions:

a. Test 0:322=Hagainst 1:322H on the 10% level (i.e. = 0.10) by comparing the t-statistic to the critical value. You should calculate the t-statistics by hand and check that SPSS provided the correct value of the t-statistics.

b. Test 0:322=H against 1:322H on the 10% level (i.e. = 0.1) by comparing the p-value (given in the table by SPSS) to .

answers
N	Valid	100
Missing	0

Solution