A few days ago
melong

can you solve these statistic questions?

here is a table.

TOPPING FRESHMAN SOPHO- JUNIOR SENIOR

vanilla 75 99 70 70

chocolate 85 50 100 90

raspberry 55 60 75 80

#1 question. find the probability that randomly selected student who likes chocolate or raspberry ice cream.

#2.find the probability that randomly selected student will be sophomore and likes raspberry ice cream only

#3. find the probability that randomly selected student doesn’t like vanilla ice cream?

#4find the probability that randomly selected student prefer vanilla ice cream

#5. find the probability that randomly selected student will be freshman or who likes chocolate ice cream.

please show me the work. i am not looking for the answer. i am looking more how to solve it with formulas and all. thanks guys!

Top 1 Answers
A few days ago
Merlyn

Favorite Answer

let’s start by getting some totals too.

vanilla total = 314

chocolate total = 325

raspberry total = 270

freshman = 215

sophomore = 209

junior = 245

senior = 240

total people = 909

probabilities are defined as the number of successes divided by the total number of possible outcomes.

there are 909 possible students to be asked, 325 + 270 = 595 who like chocolate or raspberry. the prob is therefore 595/909

——

the number of sophomores who like raspberry ice cream is 60. there are 909 total students, the prob is 60 / 909

——–

same as 1, if they don’t like vanilla, then they like one of the other two.

——

total number of vanilla / total students

= 314 / 909

——-

freshman who like chocolate = 85

total students = 909

prob = 85 / 909

—-

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