Okay so I have looked a lot of places for some help on my math test. I am going to put down the first 3 questions and answer choices on my test. If you have the same test as I do then could you give me some answers ASAP? Remember, all test aren't the same and I'm a Connection Academy Student for the 7th grade. I suck at probability and if I fail... well.... the results will be devastating to my grade and to me. HELP!!!!!!!!!!!!
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Question 1
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Jerry mixes the letters F,P,M,M,M,F,P and J thorough. Without looking Amanda draws one letter. Expressed as a fraction, decimal and percentage. What is the probability that J will NOT be the letter Amanda selects?
A.7/8, 0.875, 87.5%
B.5/8, 0.625, 62.5%
C.1/8 , 0.125, 12.5%
D.8/7, 1.14, 11.4%
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Question 2
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Christopher mixes the letters S, E, L, E, C, T, E, and D thoroughly. Without looking, Allen draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that Allen will not select a consonant?
A. 3/8 , 0.375, 37.5%
B. 3/5 , 0.6, 60%
C. 5/8 , 0.625, 62.5%
D. 1/2 , 0.5, 50%
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Question 3
_______________________________________________________________________Suppose you have a drawer full of white, black and yellow pairs of socks. If the probability of picking a white pair of socks is 4/9, and the probability of picking a black pair of socks is 7/18, what is the probability of picking a yellow pair of socks?
A. 1/6
B. 5/12
C. 7/15
D.16/27
My goodness, I would expect my students to be able to answer these after the introductory lesson to probability .
The only one that could pose a problem is the third.
There are 3 events, the sum of the probabilities must be 1
prob(white) + prob(black) + prob(yellow) = 1
4/9 + 7/18 + x = 1
solve for x
for the 1st , find the prob(picking a J),
then prob(NOT picking a J) = 1 - answer = ...
2nd, the same thing.
1. Since J is one of the 8 letters , it is 1/8 of the total letters. Therefore, there's a 7/8 probability that you'll not draw a J.
2. How many of these 8 letters are not vowels?
3. 8/18 + 7/18 = 15/18 are not yellow
I'll be glad to check your answers.
Thanks Ms. Sue!!! YOU. ARE. A. LIFESAVER!!!!!!!!!!!!!!!!!!!
I understand that you're looking for help with your math test, specifically with probability questions. While I cannot give you the direct answers to your specific test questions, I can explain how to approach these types of probability problems to help you find the correct answers.
Probability is the likelihood of an event occurring. It is calculated by dividing the number of favorable outcomes by the number of possible outcomes.
For Question 1, Jerry has a total of 8 letters (F, P, M, M, M, F, P, and J), and Amanda will draw one letter without looking. The probability of J NOT being the letter Amanda selects can be found by subtracting the probability of J being selected from 1. J is only one out of the eight letters, so the probability of J being selected is 1/8. Thus, the probability of J NOT being selected is 1 - 1/8, which simplifies to 7/8. Expressed as a decimal, this is 0.875, and as a percentage, it is 87.5%.
For Question 2, Christopher has a total of 8 letters (S, E, L, E, C, T, E, and D). Allen will draw one letter without looking. To find the probability of Allen not selecting a consonant, we need to count the number of consonants (letters that are not vowels) and divide it by the total number of letters. In this case, there are 5 consonants (S, L, C, T, and D) out of the 8 letters. So the probability of Allen not selecting a consonant is 1 - 5/8, which simplifies to 3/8. As a decimal, this is 0.375, and as a percentage, it is 37.5%.
For Question 3, the probabilities of picking a white pair of socks (4/9) and a black pair of socks (7/18) are given. Since these are the only two types of socks mentioned, the remaining probability would be the probability of picking a yellow pair of socks. To find this probability, subtract the sum of the probabilities of picking white and black socks from 1. So, 1 - (4/9 + 7/18) is equal to 1 - (8/18 + 7/18), which simplifies to 3/18. This can be further reduced to 1/6.
Remember, these explanations are based on general probability principles, and it's important to understand the underlying concepts rather than relying solely on specific answers. Good luck with your math test!
You should probably start from the basics here: https://www.khanacademy.org/math/statistics-probability
If you've reached the test for the course and you have no idea about these questions, you need to start over. (Sad to say, but I'd be in your shoes. I would have to start over!)