I need help with #8. I need to use the quadratic formula. I have a calculator that is programmed for the quadratic formula so al
l I need are the a, b, and c values. for this problem, I am required to show any equations used to solve for the variable. hope you can help me, thanks!!
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<h2>Hello There today we will solve your problem</h2>
<em>85% of the students in Yvan’s school walk to school. If 816 students walk to school, how many students are in the school?</em>
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<em>Response-</em>
Since we are using percents we can make an equation out of this question
is the way we write percents in math as a fraction
and is the part and whole you gave us
cross multiply
students are in the school
students at Y'vans school
Answer: (3.3, 3.5)
Step-by-step explanation:
The formula to calculate the confidence interval is given by :-
, where = sample mean.
z* = critical value.
= Population standard deviation.
n= Sample size.
As per given , we have
n= 217
By using z-table , the critical value for 95% confidence level : z* = 1.96
Now, the 95% confidence interval for the mean consumption of meat among males over age 50 will be :
Hence, the 95% confidence interval for the mean consumption of meat among males over age 50 =(3.3, 3.5)