Assume that newborn girls have birth weights with a mean of 3055 grams and a standard deviation of 692 grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2869 grams. What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is 2869 grams or lower? Does it seem like a sample mean of 2869 grams is unusual?

step-by-step explanation:

there's the chart

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²

i believe so, according to my "strange" way of figuring out weird math problems like this.