Probability
z-scores
Data Collection
Vocabulary
Misc.
100
Two events are __________ if the probability of one event doesn't affected the probability of the other event.
What is independent?
100
The mean score for a chapter test in a math class was 86 with a standard deviation of 5. Find the probability that a test taker scored below an 80.
What is 0.1151?
100
A clinical trial is set up to compare a proposed new drug with a placebo. 50 patients are recruited, and we randomly select 25 of them to receive the new drug, the rest receiving the placebo. After some period of time the two groups are compared to see whether the group receiving the new drug has recovered from the disease under the study. This is an example of _________.
What is an experiment?
100
Collecting, organizing, analyzing and interpreting data in order to make decisions
What is statistics?
100
Set A = {apple, orange, banana} Set B = {strawberry, blue berry, apple} A intersect B =
What is apple?
200
A coin is tossed and a single 6-sided die is rolled. Find the probability of landing on the head side of the coin and rolling a 3 on the die.
What is 1/12?
200
The mean score for a chapter test in a math class was 86 with a standard deviation of 5. Find the probability that a test taker scored above a 70.
What is 0.9993?
200
In your math class your teacher asks you to collect data on the approval rating of the president of the United States. You decided to ask the students in the cafeteria the following question "Do you approve of the way the president is handling his job?" This method of collection is an example of a ____________.
What is survey?
200
The entire group of individuals or objects.
What is population?
200
You roll a normal die. P(~3) =
What is 5/6? Remember ~ mean not
300
True or false. If two events are independent, then P(A and B) = P(A) + P(B).
What is false? P(A and B) = P(A)*P(B)
300
As reported by the college board, the normally distributed mean math score for the SAT is 518 with a standard deviation of 115. Find the percent of SAT math scores that are less than 500.
What is 43.64%?
300
For ethical reasons, ____________ is the best method to study how fast a virus would spread in a metropolitan area.
What is simulation?
300
A measurable (numerical) characteristic of a population.
What is parameter?
300
Determine whether the data set is a population or sample. The age of each member of the Senate.
What is population?
400
The probability of a New York teenager owning a skateboard is 0.37, of owning a bicycle is 0.81 and of owning both is 0.36. If a New York teenager is chosen at random, what is the probability that the teenager owns a skateboard or a bicycle?
What is 0.82? 0.37 + 0.81 - 0.36 = 0.82
400
As reported by the college board, the normally distributed mean reading score for the SAT is 503 with a standard deviation of 113. Find the percent of SAT math scores that are greater than 500.
What is 48.8%?
400
A study in California showed that students who study a musical instrument have higher GPAs than students who do not, 3.59 to 2.91. Of the music students, 16% had all As, compared with only 5% among the students who did not study a musical instrument. This is an example of _____________.
What is observational study?
400
A subset of a population.
What is sample?
400
When collecting data, randomization is important because you don't want to introduce ______ into the data set.
What is bias?
500
A math teacher gave her class two tests. 25% of the class passed both tests and 42% of the class passed the first test. What percent of the students passed the second test given that they passed the first test?
What is 60%? P(Second|First) = 0.25/0.42 = 0.6 = 60%
500
The weight of adult male beagles are normally distributed, with a mean of 25 pounds and a standard deviation of 3 pounds. Find the probability that the weight of a randomly selected male beagle is between 23 and 25 pounds.
What is 0.2486?
500
A study is developing a survey to collect data for her math class. She writes the following question: "Why is drinking fruit juice good for you?" The question is ____________ because it suggests that drinking fruit juice is good for you.
What is biased?
500
Every item has the same chance of being chosen.
What is SRS (simple random sample)?
500
There are 21 students in your third period class. You want to chose 2 people to give a prize to. You assign each person in the class a number. Use the following random numbers to find who gets the prizes: 71966 27386 50024 05358 94031 29281
What is 02 and 03?
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