Inference and Math 2/22

For more than 1,000 nights, 14-year-old Isaac Ortman has slept beneath the stars in his backyard in Duluth, Minnesota, including on a night when the temperature dipped to minus 38 degrees.

What started as a whimsical self-challenge at his family's cabin about 30 miles from home when he was 11 years old is now a nightly routine that Isaac expects he'll continue through high school — maybe longer.

How many years has Isaac slept outside?

• 2

• 3

• 4

• 5

Answer explanation

He started when he was 11 and is now 14. 3 years.

Bronny James stepped over to his dad's locker and played the phone video he had taken of the biggest moment during the game on February 7, 2023. The NBA's new scoring king tipped his head back in a rich, full-throated laugh when the audio revealed 18-year-old Bronny had anticipated that the historic basket would come on a fadeaway jumper.

18 year-old Lebron James predicted what?

Many studies have looked at brain impacts of playing video games, but to date, there hasn't been a clear answer as to their effects. Some studies suggested gaming might harm a young player's mind, but others pointed to possible benefits. One reason for the difference? Small sample sizes, says Bader Chaarani, who is a neuroscientist at the University of Vermont in Burlington, Vermont. "It's really important," he says, "to have as big a sample as we can get." That means you need to test lots and lots of people.

Why do you think it's important to have as many people as possible for studies?

2x + 2 = 6

What is x?

• 2

• 4

• 0

• 1

2 (x+4) = 14

• 1

• 2

• 3

• 4

• 8

• 4

• 2

• 1