Posted by admin | Posted in Uncategorized | Posted on 07-06-2004
Tags: education, games, math, reference, resources, school zone math basics
School Zone Math
Please Help!! Probability Math Problems. Please? [not alot?]?
Trout = 32
Bass = 7
Other = 26
Perch = 15
Based on the data, what is the probability that the next fish caught will be :
a. a trout?
b. a bass?
c. a perch?
d. other?
1) Checking his database, a meteorologist finds 192 days that had weather patterns similar to those he observed today. On 57 of those days, it rained. Based on this data, what is the probability of rain today?
2) Twila Zone asked students at her school to name their favorite radio station. The results are:
WROK = 33
WRAP = 56
WHIT = 9
Other = 24
Based on the data, what is the probability that a student selected at random would name:
a. WROK?
b. WRAP?
c. WHIT?
d. Other?
3) If there are 1260 students at Twila's school, about how many of them would you expect to choose WROK?
To answer the Fish question:
add all of the fish numbers, and you get 80.
a.) 32/80 = .4 = 40%
b.) 7/80 = .0875 = 8.75%
c.) 15/80 = .1875 = 18.75%
d.) 26/80 = .325 = 32.5%
1.) For the weather question:
57/192 = .296875 = approximately 29.69% (depending on how many decimal places you are supposed to take it out to)
2.) For the radio station question:
there is a total of 122 students, so...
a.) 33/122 = .27049 = 27.05%
b.) 56/122 = .45901 = 45.90%
c.) 9/122 = .07377 = 7.38%
d.) 24/122 = .19672 = 19.67
3.) Create a ratio of some "X" representing the answer you are in search of, and...
X/1260 = 33/122
Then, cross multiply and write this (1260) = (122X)
Next, you actually multiply and get this (41580) = (122X)
Last, divide both sides by 122, so aprroximately 340.81967 (etc. because the deciamls continue) = X.
And, since you can't have a ".81967" of a person, your final answer is 341 students = X.
Make sure your label is "students" because the question is asking about students.
Hope that helps.
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