A scientist wants to know if there is a meaningful difference between two groups of gels that grow bacteria. He randomly selects five gels from each group, and counts the number of bacteria spots on each gel: Group A: 9, 12, 13, 14, 17

Group B: 6, 5, 8, 13, 8

Find the mean and MAD of Group A and Group B.

Answer is in there^ couldn’t fit photos

Step-by-step explanation:

go and ask your mom to you

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.