Answer: 140
Step-by-step explanation: 25x20=500
32x20=640
640-500= 140!!
The answer is the 3rd one
Take 76 over 95, and then multiply by 100% to get your answer.
(76/95) * 100%= 80%
The order is: -√5, √6, 2.43, 50/20
Please award brainliest :)
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:
