David, a high school senior was wondering if the cost of attending college is worth the
1 answer:
Answer:
D.
Step-by-step explanation:
<u>Explanation for part 1.</u>
To find the mean, find total then divide by number of data set
For college salaries
Sum=41+67+53+48+45+60+59+55+52+52+50+59+44+49+52=786
Number of samples=15
Mean= 786/15 =52.4 * $1000=$52400
For High school salaries
Sum=23+33+36+29+25+43+42+38+27+25+33+41+29+33+35=492
Number of samples =15
Mean= 492/15 = 32.8 *$1000= $32800
College grads make more money according to the means.
<u>Explanation for part 2.</u>
Treat the data as part of coordinates and graph then on the same scale and axis to visualize the trend and make comparison.In this case, the graph for the line of best fit is linear as attached.
You might be interested in
The count of the sections the class should label as "Chocolate Ice Cream" is 3.
<h3>How to calculate the probability of an event?</h3>Suppose that there are finite elementary events in the sample space of the considered experiment, and all are equally likely.
Then, suppose we want to find the probability of an event E.
Then, its probability is given as
where favorable cases are those elementary events who belong to E, and total cases are the size of the sample space.
For the considered case, it is given that:
Probability of an student getting Chocolate Ice Cream for dessert at lunch = 30% = 0.3
The count of the sections the class should label as "Chocolate Ice Cream" should be such that spinner getting "Chocolate Ice Cream" as option should have the probability as 0.3
Let the count of the sections the class should label as "Chocolate Ice Cream" be
Then, as there are in total 10 sections in the spinner, and all sections are assumingly equally probable, thus, if the event E is:
E = event of getting "Chocolate Ice Cream" in the spinner ,
then as n(E) = (as there are
sections with label "Chocolate Ice Cream")
and n(S) = total count of sections (size of sample space) = 10
Thus, we get probability of event E as:
This needs to be equal to 0.3, thus,
Thus, the count of the sections the class should label as "Chocolate Ice Cream" is 3.
Learn more about probability here: