While shopping at the school bookstore Ric purchased 4 book covers for $1.25 each and a pen that cost 2/5 as much as a book cove
1 answer:
You might be interested in
Answer:
6 2/3.. i think
Step-by-step explanation:
hopefully u understand my messy handwriting
Answer:
The degrees of freedom for this sample are 27.
The sample size to get a margin of error equal or less than 0.3656 is n=4450.
Step-by-step explanation:
The degrees of freedom for calculating the value of t are:
With 27 degrees of freedom and 95% confidence level, from a table we can get that the t-value is t=2.052.
The sample size to get a margin of error equal or less than 0.3656 can be calculated as: