describe Independent sample t test.
describe A sample of 10 urgent and nonurgent patients was conducted to determine average wait time. The hospital needs to be sure that urgent patients don't wait as long as nonurgent patients. The subsequent hypotheses have been formulated
H_{0} the waiting times of vital patient are equal to or greater than nonurgent patients.
H_{a} the waiting times of vital patient are less than nonurgent patients.
Person

NonUrgent

Urgent

1

99

19

2

27

28

3

40

30

4

2

39

5

54

22

6

69

15

7

19

20

8

36

36

9

79

13

10

39

33

1) What is the mean waiting time for urgent patients?
2) What is the standard deviation for the waiting times of urgent patients?
3) What is the test statistic, t?
4) Should you accept or reject the null hypothesis?
5) What is the test statistic, F?
6) Are there equal variances between the two groups of patients?