If 30 participants each completed a memory task three times – once each after having no, moderate, or high levels of caffeine, calculate the total degrees of freedom.

29

Step-by-step explanation:

In statistics, the degrees of freedom gives the number of values that have the freedom to vary.

If the sample size is 'n' then the degree of freedom is given by:-

df= n-1

Given: The number of participants for the sample =30

Then the degree of freedom for this sample=30-1=29

Hence, The total degree of freedom= 29

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.