Weights of four-year-olds are Normally distributed, with a mean of 40 pounds and a standard deviation of 1.3 pounds. At his four-year checkup, Marlon’s weight is measured to be greater than 30% of boys his age. How much does Marlon weigh?

With a mean weight of 40 pounds and standard deviation of 1.3 pounds, Marlons weight is given as 41.7 pounds.

Mean weight = u = 40

standard deviation = 1.3 pounds

We have to solve for z

z = x-u/sd

Using the normal distribution table

z = 1.282

We have to put in the formula in the equation

[tex]1.282 = \frac{x-40}{1.3}[/tex]

1.282*1.3 = x-40

1.666 = x- 40

collect like terms

x = 40+1.666

= 41.7

Therefore Marlon weighs 41.7 pounds

Read more on normal distribution here: https://brainly.com/question/4079902

Answer:

D. 39.3 pounds

Explanation:

since the answer is like no where else lol, edge 22

Is a hotdog a sandwich? WHY OR WHY NOT?

Sarah wanted to know if water boils faster if salt is added to it. She put two liters of water in two
identical pots, then added three tablespoons of salt to one pot. She put both pots on a stove, each on high heat.
She then recorded how long it took for each pot of water to boil.
Which factor is a constant in this experiment?
A) the amount of water in each pot
B) the amount of salt in each pot
C) the time it takes for the water to boil

What is dry and hard but when you put it in it comes out Wet and Gushy