Here are the only reference materials allowed for this exam. Click on each link to open the file in a separate tab or window that will remain open during the exam period for you to consult. Desmos Scientific Calculator STA2023 Formula Sheet Binomial Tables Z-Table (Distribution of Standard Normal)   Microsoft Excel – desktop version or try: sheets.google.com in the address bar.

Classify the variable below in each of the following categories: the cholesterol levels of a group of adults the day after Thanksgiving a) qualitative or quantitative:  b) discrete, continuous, or neither: c) nominal, ordinal, interval, or ratio level of measurement:  

A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180 high school teachers, 36 were single. Is the proportion of elementary school teachers who were single less than the proportion of high school teachers who were single? Use α = 0.01.   H0:

A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.2 minutes with a standard deviation of 0.8 minute. If α = 0.10, test the store’s claim. H0: = 3.5 Ha:   Test statistic: p-Value =              Decision: Conclusion: There sufficient evidence to support the conclusion that the mean waiting time at this hardware store is than 3.5 minutes.

A recent study claimed that 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. At α = 0.05, decide if this sample gives evidence that the proportion of overweight junior high students is actually different from 15%. H0: p 0.15 Ha: p   Test statistic: p-Value = Decision:  Conclusion: There sufficient evidence to support the conclusion that the percentage of junior high students is than 15%.

On a typical seismogram, _________ will show the highest amplitudes.

The point of origin of an earthquake inside the Earth is referred to as the _________.

Wegener’s theory of continental drift was largely dismissed because _________.

Which of the following provides the best example of a present day active continental margin?

On a typical seismogram, _________ will show the highest amplitudes.