STA 2023 (STA2023)

STA2023 Exam 2 form A

Practice questions for STA2023 exam 2.

Second exam of the semester.

Contents: 1. Chapter 1: basic terminology 2. Class Notes: IQR, 5 number summary, 1-variable stats calculator formulas, standard dev 3. Chapter 2: distribution, frequency tables, pie charts, bar charts, contingency tables 4. Chapter 3: histograms, relative frequency, stem and leaf plots, dot plots, terminology display and summary of quantitative data 5. Class Notes: box plots, more on IQR, how to find an outlier 6. Chapter 4: timeplots 7. Chapter 5: normal modal, stand...

STA 2023 QUIZ 2. Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a standard deviation of 6.1 points. Approximately, what percentage of the data is between 58.1 points and 94.7 points? 99.7% Yes, 58.1 and 94.7 are three standard deviations away from the mean. So, according to the Empirical Rule, there should be 99.7% of the data within three standard deviations away from the mean. 68% 50% 95% This is an application of the Empirical Rule...

STA 2023 QUIZ 2. Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a standard deviation of 6.1 points. Approximately, what percentage of the data is between 58.1 points and 94.7 points? 99.7% Yes, 58.1 and 94.7 are three standard deviations away from the mean. So, according to the Empirical Rule, there should be 99.7% of the data within three standard deviations away from the mean. 68% 50% 95% This is an application of the Empirical Rule...

STA 2023 QUIZ 2. Scores on an exam follow an approximately bell shaped distribution with a mean of 76.4 and a standard deviation of 6.1 points. Approximately, what percentage of the data is between 58.1 points and 94.7 points? 99.7% Yes, 58.1 and 94.7 are three standard deviations away from the mean. So, according to the Empirical Rule, there should be 99.7% of the data within three standard deviations away from the mean. 68% 50% 95% This is an application of the Empirical Rule....

STA 2023 Module 3 Quiz Find the indicated probability. An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with μ = 15.5 and σ = 3.6. What is the probability that during a given week the airline will lose less than 20 suitcases? 0.3944 0.1056 0.8944 0.4040 Question 2 1 / 1 point Find the indicated area. Find the area under the standard normal curve to the right of z = 1. 0.1587 0.84...