X: 0 1 2 3 4
p(x): 0.1 0.6 0.05 0.15 0.1

geraldine surveyed her school to find the number of siblings that they had. she created a probability distribution which is displayed in the table. what is the average number of siblings for students in the school?

a) 1 sibling
b) 1.5 siblings
c) 2 siblings
d) 2.5 siblings

answer:      

step-by-step explanation:

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.