Mathematics, 05.12.2019 04:31 StevencoolGG
Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=106 and σ=15. (a) what proportion of children aged 13 to 15 years old have scores on this test above 92 ? (reminder: proportions are between 0 and 1 - don't put in percentages! )
Answers: 3
and 
.![P(x92)=1-P(x\leq92)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{92-106}{15})\\\\=1-P(z\leq })\\\\=1-P(z\leq-0.93)=1-(1-P(z\leq0.93))\ \ [\because\ P(Z\leq -z)=1-P(Z\leq z)]\\\\=P(z\leq0.93)=0.8238\ \ [\text{By using z-value table.}]](/tpl/images/0403/9865/bf621.png)
Another question on Mathematics
Mathematics, 21.06.2019 17:00
Use the graph of the sine function y=2sinθ shown below
Answers: 1
Mathematics, 21.06.2019 18:10
The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches
Answers: 3
Mathematics, 21.06.2019 18:20
Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.
Answers: 3
Mathematics, 21.06.2019 20:00
The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false
Answers: 1
You know the right answer?
Scores on a certain intelligence test for children between ages 13 and 15 years are approximately no...
Questions
Computers and Technology, 03.05.2021 15:10
Computers and Technology, 03.05.2021 15:10
