At the newest animated movie, for every 9 children, there are 4 adults. There are a total of 39 children and adults at the movie
1 answer:
You might be interested in
Answer:
The probability that 44% or fewer of the pre-teens have a TV in their bedroom is 96.64%.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
For a proportion p in a sample of size n, we have that
In this problem:
The probability that 44% or fewer of the pre-teens have a TV in their bedroom is
This is the pvalue of Z when X = 0.44. So
has a pvalue of 0.9664
The probability that 44% or fewer of the pre-teens have a TV in their bedroom is 96.64%.
Answer:
A). Adam and Bianca is saving the same per day and it is 3$/day
B). On starting of competitions,
Adam has 3$ and Bianca has 2$
Step-by-step explanation:
Given that saving of Adam is shown in graph and saving of Bianca is shown in the table.
<em>In the case of Adam's saving</em>
Equation of line for saving is given by y=mx+c
y is saving in dollars and x is a number of days.
where m is a slope of line and c is the y-intercept
The slope is given by m=
From a given graph of Adam's saving,
A line passing through, (0,3) and (1,6)
The slope is given line will be
m1=
m1=
m1=3
and y-intercept of the graph is c=3
Therefore, The equation for Adam's saving is y=3x+3
.
In the case of Bianca's saving
Equation of line for saving is given by (y-Y1)=m(x-X1)
y is saving in dollars and x is a number of days.
where m is the slope of the line
The slope is given by m=
From the given table of Bianca's saving,
A line passing through, (5,17) and (8,26)
The slope is given line will be
m2=
m2=
m2=3
Therefore, The equation for Bianca's saving is
(y-Y1)=m(x-X1)
(y-17)=3(x-5)
y-17=3x-15
y=3x+2
A). Determine who saves the most per day.
Ans.
On comparing the slope of the equations
m1=m2=3$/day
Thus, Adam and Bianca is saving the same per day
B). How much money both have starting of competitions
Ans.
On comparing the y-intercept os equations
For Adam: Y-intercept is 3$
For Bianca: Y-intercept is 2$