Can someone please help I will give you 30 points and brainliest if the answer is right also no links please
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
First, make A equal one by factoring out the greatest common factor, 6. This makes the new expression . Then, factor the remaining polynomial by finding two numbers that multiply to -90 and add to 1. These two numbers are -10 and 9. So, add each term to x and then multiply to get the final answer,
.
Answer:
2,655 students
Step-by-step explanation:
The z-score for a 99% confidence interval is z = 2.576
The standard error for a proportion p is:
For a proportion of p =0.20, in order to ensure a standard error of 0.02, the sample size 'n' must be:
Rounding up to the next whole student, the sample size needed is 2,655 students.