Normal distribution,
Normal distribution, t distribution
t distribution, Normal distribution
Neither
Normal distribution
Question 2
=23
C.I=95%
a) Degrees of freedom
=23-1
=22
b) The critical value of t
We have
=22
α=1-
=0.025
From the tables, the critical value of t at α=0.025 and =22 is
=2.074
c) Margin of error
Margin of error, s calculated as
=23
Now;
2.919
d) Confidence interval
±
Where, ,
Therefore;
= 27.5±2.919
(24.581, 30.419)
24.581˂
Question 3
Male students= 25+162
=187 students
Female students=19+148
=167
Total student=167+187
=354 students
Students who play chess
Male=25
Female=19
Total=19+25
=44 Students
The question is to determine whether there exist a relationship between students(male and female) and playing chess
Question 4
In ANOVA, the test is to determine if the experiment results are significant i.e. testing to see if there difference in mean between the three sample.
Delegate your assignment to our experts and they will do the rest.
In each of the comparison group, the test statistic must have the sample sizes, sample means and standard deviation.
It shows that we reject the null hypothesis because there Is at least one mean of the population that is different from the others
Reference
Algina J, Olejnin S. (2003). Conducting power analysis for ANOVA and ANCOVA in between subjects design. Evaluating and the Health Proffesions , 26(3),288-314.
Lange,K.L.,Little, R.J.,Taylor,J.M. (1989). Robust statistical modelling using the t-distribution. Journal of the American Statistical Association , 84(408),881-896.
