Hello! Can somebody please show me the step-by-step for the reaction? I am getting B. as the answer but I am not sure if I am correct or not. Please explain, thank you!

Hello! Can somebody please show me the step-by-step for the reaction? I am getting B. as...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
Can you please show me step by step? I am lost. I don't know
where to start. I can not use excel. I have the answer. I just
don't know how to get it.
a 0.05 n100 40 21 |The President of UTA is interested in estimating the proportion of Statistics students who drop BUSA 3321 this semester with an UPPER ONE-TAILED 100*(1 a)% confidence interval (a is shown on right). This semester there were n students enrolled in 3321...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...
HELLO
I AM CURRENTLY IN DIFFERENTIAL EQUATIONS
PLEASE EXPLAIN EACH STEP SO I CAN LEARN FROM YOU (I KNOW SOME
PEOPLE ONLY CARE ABOUT TEH ANSWER, BUT WILL REALLY APPRECIATE IT)
TO SAVE TIME FEEL FREE TO JUST SAY A LAW, THEOREM, OR CONCEPT FOR
AN EXPLANATION AND I CAN GO AHEAD AND STUDY IT ON MY OWN.
i REALLY DO READ THESE VERY CAREFULLY AND USE THE COMMENTS
OFTEN, SO JUST A LITTLE HEADS UP.
I FIND IT DIFFICULT...