Answer:
0.5
Step-by-step explanation:
Given that height of 7 year old children are normally distributed with mean =49 inches and std deviation = 2inches
Brenda is 50 inches tall
This means her X score is 50
To convert this X score to Z score we use the formula given below
Here we know all the values of x, mu and sigma
Just substitute
Z score
=
Thus Z score of Brenda is 0.5
The final equation of required line is:
Further Explanation:
Given equation of line is:
When the equation is given in slope-intercept form, the c-efficient of m is the slope of the line
Let m1 be the slope of given line:
Then
Let m2 be the slope of line perpendicular to given line
We know that the product of slopes of two perpendicular lines is -1
The general form is:
To find the value of b, putting (4,4) in equation
The final equation of required line is:
Keywords: Slope, Slope-intercept form
Learn more about point-intercept form of line at:
#LearnwithBrainly
<u>Answer:</u>
are two roots of equation
<u>Solution:</u>
Need to solve given equation using quadratic formula.
General form of quadratic equation is
And quadratic formula for getting roots of quadratic equation is
In our case b = -1 , a = -3 and c = -3
Calculating roots of the equation we get
Since is equal to -35, which is less than zero, so given equation will not have real roots and have complex roots.
Answer:
Inferential statistical methods
Step-by-step explanation:
Remember, Madeline had obtained sample results, but she wants to decide whether to apply the sample results to the entire population. To do this, she can use the following:
- estimate her research parameters or
- or perform a hypothesis test which answers her research objectives.
Based on the results she gets, Madeline, can to thus infer from the sample results and apply them to the population.