Hi, I'm happy to help!
To solve this, we need to multiply the 60% by the amount of students.
75×60%
Percentages are always out of 100, so we can write 60% like this:
75×60%
75×0.60, or 75×0.6
Now, we just multiply these together.
75×0.6
45
So, 45 of the students are girls.
I hope this was helpful, keep learning! :D
Answer:
go to mathaway.com
Step-by-step explanation:
Answer:
in explanation
Step-by-step explanation:
First, you would move all the variables to one side and then
move all the constants to one side.
Make them all one number, and then you solve for the answer.
The answer would be 150 as each ten bar is si worth 10 and 10x15=150.
We need to test the hypotheses:
The confidence interval for proportion is
.
Here
The z value to be used is 1.96.
The 95% CI is
.
Since 0.5 lies in the interval (0.488,0.543), we cannot reject the null hypothesis with 95% confidence.