1.
All planets in our solar system orbit the Sun. Pluto orbits the Sun. Therefore, Pluto is a planet in our solar system. This argument is:
Valid
Sound
Invalid
Both valid and sound
2.
A marketing manager notices that customers who use the company's mobile app make more frequent purchases. She concludes that promoting the app will increase overall sales. Which of the following, if true, would most weaken this conclusion?
The app offers exclusive discounts not available to non-app users
Customers who make frequent purchases are more likely to download the app
The app is only available on certain smartphone platforms
The company's competitors also have mobile apps
3.
If it's sunny, we'll have a picnic. We didn't have a picnic. Therefore, it wasn't sunny. This reasoning is:
Modus ponens
Modus tollens
Affirming the consequent
Denying the antecedent
4.
All metals conduct electricity. This material conducts electricity. Therefore, this material is a metal. This argument is:
Valid
Sound
Invalid
Both valid and sound
5.
If you study hard, you'll get good grades. You didn't get good grades. Therefore, you didn't study hard. This reasoning is:
Modus ponens
Modus tollens
Affirming the consequent
Denying the antecedent
6.
A politician argues that increasing funding for early childhood education will lead to better economic outcomes for the country. Which of the following is an assumption underlying this argument?
All children have access to early childhood education programs
The benefits of early childhood education persist into adulthood
Early childhood education is more important than higher education
Increased funding will automatically improve the quality of education
7.
If you exercise regularly, you'll be healthy. You're not healthy. Therefore, you must not exercise regularly. This reasoning is:
Modus ponens
Modus tollens
Affirming the consequent
Denying the antecedent
8.
All politicians are liars. John is a liar. Therefore, John is a politician. This argument is:
Valid
Sound
Invalid
Both valid and sound
9.
A company's sales have increased by 20% since it started advertising on social media. The marketing manager concludes that social media advertising is highly effective. Which of the following, if true, would most weaken this conclusion?
The company's main competitor went out of business during the same period
The company's product quality improved significantly in the same timeframe
Other companies in the industry have seen similar sales increases without social media advertising
The cost of social media advertising is much lower than traditional advertising methods
10.
A company introduces a new flexible work-from-home policy. After six months, employee satisfaction surveys show improved results. The CEO concludes that the new policy has increased employee satisfaction. Which of the following, if true, would most weaken this conclusion?
The company also increased salaries during the same period
Only a small percentage of employees have taken advantage of the policy
Employees who work from home report feeling isolated from their colleagues
The company's competitors have similar work-from-home policies
Questions Answered: 0/10
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