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What happens to the width of a confidence interval if the confidence level is decreased from 95% to 90%?

Which of the following is true about the weights used in a weighted moving average?

Which of the following metrics can be used to evaluate the performance of a regression model?

In a two-tailed 95% confidence interval, what percentage of the distribution is left out?

What does a negative slope in a linear regression model indicate?

What does a Type I error represent in hypothesis testing?

What happens to the width of a confidence interval if the confidence level is increased from 90% to 95%?

When generating a Pivot Table, what does selecting “Add this data to the Data Model” do?

What is the purpose of a confidence interval in statistics?

Table below shows the sales revenue () of eight different companies based on advertising budget (), Research & Development (R&D) expenditure cost (), and number of employees (). Please note that ,  and  are independent variables, and y is the target/response variable. Advertising Budget () R&D Expenditure Cost () Number of Employees () Sales Revenue () 50 200 100 250 60 220 120 270 70 210 110 280 80 230 130 300 90 240 150 320 100 250 140 350 110 260 160 370 120 270 170 400  Given this dataset, what is the  value?