Maci surveyed all the members of her softball team about their favorite sport.
From these results, Maci concluded that softball was the favorite sport among all her classmates. Which is the best explanation for why her conclusion might not be valid?
The softball team meets only on weekdays.
She should have asked only people who do not play sports.
The survey should have been done daily for a week.
The sample was not representative of all of her classmates.
Ms. Hernandez determined that 60% of the students in her classes brought an umbrella to school when the weather forecast predicted rain. If she has a total of 150 students, which statement does not represent Ms. Hernandez’s data?
On days when rain is forecasted, less than \(\frac{2}{5}\) of her students bring an umbrella to school.
On days when rain is forecasted, 90 of her students bring an umbrella to school.
On days when rain is forecasted, more than \(\frac{1}{2}\) of her students bring an umbrella to school.
On days when rain is forecasted, 60 of her students do not bring an umbrella to school.
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