The 10 values of reported height are ...
... 61, 68, 57.5, 48.5, 75, 65, 80, 68, 69, 63
Their total is 655, so their average is 655/10 = 65.5 . . . . . your 3rd selection
Answer:
it just be positive 5
Step-by-step explanation:
Answer:
There are 240 boys.
Step-by-step explanation:
There are five boys to every three girls in an introductory Chinese course. Given that there are 384 students enrolled in total, we want to determine the amount of students which are boys.
Let <em>b</em> represent the number of boys and <em>g</em> girls.
Since the ratio is 5:3, we can write that:

And since the total number of students is 384:

From the first equation, cross-multiply:

Solve for <em>g: </em>
<em />
<em />
Substitute:

Simplify:

Solve for <em>b: </em>
<em />
<em />
<em />
In conclusion, 240 of the total students are boys.
0.8 times 1200 is 960, which is the number of people when the theatre is 80% full.
Answer:
then calculate the numbers to find the confidence interval
Step-by-step explanation: