1. The line of best fit for the data in the table below is y = 3.3x + 1.3 Use this model to find the value of y when x = 15.
1 answer:
You might be interested in
Answer:
The 99% confidence interval is between 62.36%(lower bound) and 89.64%(upper bound).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
A sample of 65 students from the freshmen class is used and a mean score of 76% correct is obtained.
This means that
99% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
0.6236*100 = 62.36%
0.8964*100 = 89.64%
The 99% confidence interval is between 62.36%(lower bound) and 89.64%(upper bound).
Answer:
It is a solution
Step-by-step explanation:
Given
Required
Determine if is a solution
implies that:
To check if it is a solution, we simply substitute values for x and y in the given equation;
Since both sides of the equation are equal; then, Yes, it is a solution