Discuss the below:
Q1) In surveys, what special problems do open-ended questions have? How can these be minimized? In what situations are open-ended questions most useful?
Q2) Independent random samples selected from two normal populations produced the following sample means and standard deviations.
Sample 1 Sample 2
n1= 14 n2 = 11
x1‾ = 7.1 x2‾ = 8.4
s1 = 2.3 s2 = 2.9
Conduct the test :Ho (μ1 -μ2 ) = 0 against. :Ha (μ1 -μ2) ≠ 0, Use α= .05.
Q3) A multinomial experiment with k = 4 cells and n = 300 produced the data shown in the following table.
Cell
1 2 3 4
ni 69 65 80 86
Do these data provide sufficient evidence to contradict the null hypothesis that Test using α = .05