Answer: Pr= 42.9%
Step-by-step explanation:
SD = 4.2
Mean = 9.4
That is data are distributed between 9.4+/-4.2
Which is between 5.2 - 13.6
Probability of at least 10lb is given by;
Pr= 13.6-10 / 13.6-5.2
Pr= 3.6/ 8.4
Pr= 0.4286× 100%
Pr= 42.9%
positive number times negative number is negative number "(+)(-) = (-)".

we change the mixed numbers to the improper fractions

Answer:
Ella, Miles, Sam, Laney
Step-by-step explanation:
that should be the answer hope I could help
Correct Answer are A and D