MHB Construct the 99% confidence interval estimate

AI Thread Summary
To construct a 99% confidence interval estimate for the mean weight of high school football players based on a sample of 400 players with a mean weight of 198 lbs and a standard deviation of 26 lbs, the formula for the confidence interval is used. The critical value for a 99% confidence level is approximately 2.576. The margin of error is calculated by multiplying the critical value by the standard error, which is the standard deviation divided by the square root of the sample size. This results in a confidence interval of approximately 198 lbs ± 2.576 * (26/√400). The final confidence interval provides a range that estimates the mean weight of all high school football players with 99% certainty.
alexisolivia99
Messages
1
Reaction score
0
A simple random sample of 400 high school football players was taken in order to estimate the mean weight of all high school football players. The sample has a mean of 198 lbs. and a standard deviation 26 lbs. Construct the 99% confidence interval estimate of the mean weight of all high school football players.
 
Last edited:
Mathematics news on Phys.org
Hello and welcome to MHB! :D

We ask that our users show their progress (work thus far or thoughts on how to begin) when posting questions. This way our helpers can see where you are stuck or may be going astray and will be able to post the best help possible without potentially making a suggestion which you have already tried, which would waste your time and that of the helper.

Can you post what you have done so far?

P.S. I gave this thread a title that indicates the nature of the question being asked. :)
 
Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other day I saw a math problem on line, which they said came from a Polish Olympiad, where you compute the length x of the 3rd side which is the same as the radius, so that the sides of length 2,x, and 11 are inscribed on the arc of a semi-circle. The law of cosines applied twice gives the answer for x of exactly 7, but the arithmetic is so complex that the...
Thread 'Unit Circle Double Angle Derivations'
Here I made a terrible mistake of assuming this to be an equilateral triangle and set 2sinx=1 => x=pi/6. Although this did derive the double angle formulas it also led into a terrible mess trying to find all the combinations of sides. I must have been tired and just assumed 6x=180 and 2sinx=1. By that time, I was so mindset that I nearly scolded a person for even saying 90-x. I wonder if this is a case of biased observation that seeks to dis credit me like Jesus of Nazareth since in reality...
Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...

Similar threads

Replies
1
Views
2K
Replies
4
Views
1K
Replies
22
Views
3K
Replies
1
Views
1K
Replies
2
Views
4K
Replies
7
Views
2K
Replies
3
Views
1K
Back
Top