Online Access Free Data-Driven-Decision-Making Practice Test

A nonprofit organization is asking for donations. It hopes to design an email campaign that will ensure it receives at least $50,000. The campaign will reach 10,000 donors and receive donations with a mean of $10 and a standard deviation of $5.
Which measure should be used to determine the probability of the campaign receiving $50,000?

• A.Median
• B.Z-score
• C.T-statistic
• D.R-squared

Why are sample sizes important for ensuring statistical significance?

• A.So that accurate conclusions can be confidently applied to larger populations
• B.So that no additional analysis is required
• C.So that the possibility of researcher bias is eliminated
• D.So that a hypothesis cannot be misinterpreted

A hospital is restructuring its business and administrative functions.
Which component of service delivery could be analyzed with a data analytics approach to help determine whether the hospital is adequately staffed for each shift?

• A.Staff productivity levels
• B.Staff education levels
• C.Patient-to-staff ratios
• D.Patient satisfaction levels

A laboratory uses a graduated cylinder to measure liquid volume in metric units. Which type of experimental design is this laboratory implementing?

• A.Quantitative research
• B.Qualitative research
• C.Development research
• D.Precision research

The daily sales from a salon are normally distributed with a mean of $1,500 and a standard deviation of $250.
The salon owner notices that sales were $750 on a particular day.
Why should the owner be concerned about sales based on this scenario?

• A.Sales of $750 are within two standard deviations of the mean.
• B.Sales of $750 are within three standard deviations of the mean.
• C.Sales of $750 are two standard deviations of the mean.
• D.Sales of $750 are outside three standard deviations of the mean.