What challenge is most clearly present in the experiment?

The graphs below shows data from the company.  Roughly what is the effect of an additional $1,000 of salary offer on the probability of job acceptance?

For many years, a company had a very generous health insurance plan, with no deductible. In 2023, the company introduced a $3000 deductible for all employees, and the company has no information about non-employees. The company wants to know how the deductible affected health care spending. What identification strategy would be most appropriate?

A retail company notices a strong positive correlation between the number of loyalty program members and overall store revenue. For interpreting this correlation as the effect of loyalty program membership on revenue, which of the following would be a confounding factor?

Here are data from the experiment:   Group # People Average cost per windshield replaced Assigned to hourly wage 1000 82 Assigned to treatment, chose hourly wage 500 90 Assigned to treatment, chose piece rate contract 500 54       What is the effect of the piece rate contract, relative to fixed hourly wage, on the cost per windshield replaced?    

Even assuming the union allowed it, what would be a concern about scaling up the piece rate contract by giving it to all employees?

In a patient with an autoimmune disorder, helper T cells become non-functional. Which of the following would be true of this patient’s immune response?

Bernie Madoff went to prison for which of the following types of scam:

Describe each person by giving their nationality, profession, and an adjective you would use to describe them. Use words you know and use a different adjective for each person. Justin Bieber: Cristiano Ronaldo: Beyoncé: Marie Curie:

The town of Apple, Ohio, enacted a statute that makes it a misdemeanor to “ogle anyone in a public setting.”  The statute further defines “ogle” as ” to stare at someone for more than three continuous seconds.”  Brett was in downtown Apple when he saw a woman practicing a dance routine in a city park.  Brett was very amused and fascinated by the woman’s dance, and he continued to watch her for many seconds.  A police officer observed Brett eyeing the woman and arrested him for violating the statute.  At trial, what would be Brett’s best defense for acquittal?