Question

1. Use the following information to answer questions 9-15.

   The length of time spent in the examination room is recorded for each patient seen by each physician at an orthopedic clinic.

   Does the data provide a significance difference in mean times?

   Physician 1	Physician 2	Physician 3	Physician 4
   34	33	17	28
   25	35	30	33
   27	31	30	31
   31	31	26	27
   26	42	32	32
   34	33	28	33
   21		26	40
   		29
   X.1=198	X. 2=205	X.3=218	X.4=224

   The null hypothesis for this ANOVA problem is:

   		H0: μ1=μ2
   		H0: μ1=μ2=μ3
   		H0: μ1=μ2=μ3=μ4
   		H0: μ1=μ2=μ3=μ4=μ5

10 points   

QUESTION 10

1. The total sum of squares, (SST) equals:

   		450.55
   		698.11
   		212.35
   		485.76

10 points   

QUESTION 11

1. The sum of squares between treatments (SSTR) equals:

   		450.55
   		698.11
   		212.35
   		d) 485.76

10 points   

QUESTION 12

1. The test statistic to test the null hypothesis equals:

   		0.59
   		1.06
   		3.50
   		19.231

10 points   

QUESTION 13

1. The null hypothesis is to be tested at the 5% level of significance. The critical value from the table is:

   		2.54
   		3.72
   		3.01
   		2.78

Answer 1

The statistical software output for this problem is :

H₀: μ₁=μ₂=μ₃=μ₄

SST = 698.11

SSTR = 212.35

test statistic = 3.50

Critical value = 3.01