act 1 venn diagram hw\n1. at lhs 1600 students were surveyed. 1200 students said they felt confident in…

act 1 venn diagram hw\n1. at lhs 1600 students were surveyed. 1200 students said they felt confident in their math abilities. 450 students earned an a in their last math class. 22 students felt confident in their math abilities and did not earn an a in their last math class.\n2. a group is studying youth fashion. of the 620 people observed at the local mall, 300 wore branded clothing, 88 wore neon - colored clothing, and 25 were wearing neither branded clothing nor neon - colored clothing.\n3. define the categories, with abbreviations, and complete a venn diagram for each scenario. ficky business co conducted a survey of 114 employees. determine how many people:\n - 51 employees are males\n - 80 employees responded they drink coffee\n - 21 females do not drink coffee\ndefined categories (with abbreviations):\n4. finnigan surveyed students at his school. he found that 78 students own an iphone and 57 of those students own headphones.\n - 13 students do not own an iphone and own headphones\n - 9 students do not own either device\ndefined categories (with abbreviations):
Answer
Explanation:
Step1: Identify the two - relevant groups
Let $C$ represent students confident in math abilities and $A$ represent students who earned an A in last math class.
Step2: Analyze the given data
We know $n(C)=1200$, $n(A) = 450$ and the number of students in $C$ but not in $A$ is 22.
Answer:
Categories: Confident in math abilities ($C$), Earned an A in last math class ($A$)
Explanation:
Step1: Determine the two - fashion related groups
Let $B$ represent people wearing branded clothing and $N$ represent people wearing neon - colored clothing.
Step2: Consider the non - wearing group
25 people wear neither, out of 620 people observed.
Answer:
Categories: Wearing branded clothing ($B$), Wearing neon - colored clothing ($N$)
Explanation:
Step1: Define the two groups based on survey data
Let $M$ represent male employees and $D$ represent employees who drink coffee.
Step2: Use the given information about non - overlapping parts
We know the number of male employees, employees who drink coffee and female non - coffee drinkers.
Answer:
Categories: Male employees ($M$), Employees who drink coffee ($D$)
Explanation:
Step1: Identify the two device - owning groups
Let $I$ represent students who own an iPhone and $H$ represent students who own headphones.
Step2: Analyze the non - owning and overlapping data
We know the number of iPhone owners, iPhone - owning headphone owners, non - iPhone headphone owners and non - owners of both.
Answer:
Categories: Own an iPhone ($I$), Own headphones ($H$)