Author: Anonymous

III. (24pts/2pts each) Multiple-Choice

Based on a random sample of 100 Penn State graduate students, 95% confidence interval for the true mean monthly rent is ($700, $1200). The correct interpretation of the interval is 

Jake feels jealous of his coworker’s success, but insists that his coworker is jealous of him and trying to compete unfairly. Which defense mechanism is Jake most likely using?

Two examples of filarial worms are the _____________________ and the _________________________.   [worm1] [worm2]

A synthetic version of conotoxin of some cone shells can be used as an anesthetic that is much more powerful than morphine.

Here are the links to the tables: Z-table: https://psu-statonline.github.io/distribution_tables/z_table.html T-table: https://psu-statonline.github.io/distribution_tables/t_table.html   or click on the file name below (not the downarrow to open the table within the spacer): Z-table   T-table   

Talking on the phone while checking your email.

Please note that this question consists of five parts. You may use MINITAB to double check your final answer. However you MUST show all the mathematical work to get to the final answer. Just giving the answer without adequate work/explanation may result in zero for the question.  A university is interested in investigating if more than 55% of their students believe it is acceptable to use generative AI tools such as Chat GPT, Copilot, etc. to help them complete the assignments in their classes.  In a random sample of 300 students, 237 said they believe it is acceptable to use AI to help them with assignments.  Set up the appropriate null and alternative hypotheses that answer the university’s research question.  Are the conditions to carry out the above test satisfied? In addition to answering yes or no, clearly state the conditions and explain how you check.  Calculate the test statistic. Show your calculations.  Calculate the p value for the test. You must clearly write down the probability statement for the p-value. You can use the appropriate distribution table or Minitab to calculate the value.   Write the final conclusion in the context of the problem (use 5% significance level). 

A company claims that their newly introduced protein bar has an average of at least 20 grams of protein per bar. Consumer agency think that the true average protein amount per bar might be lower than what the company is advertising. They have taken a random sample of protein bars of this type to test their suspicion. The correct null and alternative hypotheses that would answer the consumer agency’s research question are:  

In a group therapy session, effective members tend to focus on what is happening between them during the meeting, rather than discussing events from outside the session. This focus is an example of which principle?