Student’s t is a statistical tool used most frequently to express confidence intervals. compare results from different experiments. evaluate the probability of an experimental value agreeing with a “known” value. determine if a questionable data point should be discarded.

Find the  margin of error for the 95% confidence interval  of the following data: (report 3 decimal places) [A], [B], [C], [D]

Which statements are TRUE regarding the expression of the concentration of a 54.9-ppm Fe solution in terms of molarity?

___________ is a consistent error that can be detected and corrected.

Which of the data set(s) is the most accurate? [A], [B] Which of the data set(s) is the most precise? [B] Which of the data set(s) is the most affected by a systematic error? [C] Which data set(s) is the most affected by random error? [A]

A _____________ is a reagent that protects a component of the analyte from reaction with EDTA.

The Volhard method cannot be employed to analyze

Which step(s) is/are NOT required in the practice of weighing by difference? Weigh a capped bottle containing the dry reagent. Quickly pour some of the dry reagent from the weighing bottle into a receiver. Weigh the receiver containing the dry reagent. Recap the bottle that now contains less of the dry reagent. Reweigh the capped bottle that contains less of the dry reagent.

How much water is to be added to prepare a [X] N HCl solution from [Y] N HCl [V] L solution? Report in L.

__________ chemical analysis is the measurement of how much of a chemical substance is present. __________ chemical analysis is the determination of what is present in a sample.