What critical value of t should be used for a 95% confidence interval for the population mean based on a random sample of 21 observations?
Find the t-table here.
O * = 1.721
O t = 1.725
O t* = 2.080
O t* = 2.086

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days