What is the critical value for a chi-square test with 13 degrees of freedom at the 1 percent level of significance

27.688

Step-by-step explanation:

The critical chi-square value depends on significance level ()  and degrees of freedom (df) .

Given significance level: () = 1% = 0.01

Degrees of freedom (df)= 13

From the chi-square table, the critical chi-square value for df = 13 and

is

Hence, the  required critical value = 27.688

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3