PLEASE ANSWERRRR
1 answer:
The equation that gives the line is A.
Step-by-step explanation:
Step 1:
First, we need to plot some points on the line on the graph. Some of the points are (1, 55), (3, 65), and (3, 75).
We need to find which of the given equations relating the x values to the values of y in the determined coordinates.
y is the dependent value whereas x is independent i.e. the y value changes according to the x value.
Step 2:
Now we substitute the values in the given equation to see which corresponds correctly.
For , when x = 2,
For , when x = 2,
For , when x = 2,
For , when x = 2,
Only the first equation gets a value of y, that corresponds to a coordinate on the line of the graph, so A. represents the line of best fit.
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THIS IS THE COMPLETE QUESTION BELOW;
The weekly salaries of sociologists in the United States are normally distributed and have a known population standard deviation of 425 dollars and an unknown population mean. A random sample of 22 sociologists is taken and gives a sample mean of 1520 dollars.
Find the margin of error for the confidence interval for the population mean with a 98% confidence level.
z0.10 z0.05 z0.025 z0.01 z0.005
1.282 1.645 1.960 2.326 2.576
You may use a calculator or the common z values above. Round the final answer to two decimal places.
Answer
Margin error =210.8
Given:
standard deviation of 425
sample mean x=1520 dollars.
random sample n= 22
From the question We need to to calculate the margin of error for the confidence interval for the population mean .
CHECK THE ATTACHMENT FOR DETAILED EXPLANATION
