Question

Find the critical value χ R corresponding to a sample size of 15 and a confidence level of 90%. 023.685 06.571 O31.319 O29.141

Answer 1

Explanation:

i) Confidence level = 90%

ii) therefore significance level =
`\alpha` =
`(100 - 90)/(100)\hspace{0.1cm} = \hspace{0.1cm} 0.1`

iii) this problem is for a two tailed test.

iv) therefore significance level =
`(\alpha )/(2)` =
`(0.1)/(2)` = 0.05

iii) sample size = 15

iv) therefore degrees of freedom = sample size - 1 = 15 - 1 = 14

v) the upper ( or right) chi squared value,
`\chi^2_(R)` from Chi squared critical value tables = 23.685