1. Which branch of statistics would employ probability to predict how many miles

Question

1. Which branch of statistics would employ probability to predict how many miles one should be able to drive a 2000 Toyota Celica during its lifetime? A) time series statistics B) descriptive statistics C) inferential statistics D) differential statistics 2. The amount of time needed to run the Boston marathon is an example of which type of variable? A) discrete qualitative C) continuous D) temporal What type of sampling is being employed if the country is divided into economic classes and a sample is chosen from each class to be surveyed? A) random sampling B) systematic sampling C) stratified sampling D) cluster sampling 3. 4. If a researcher manipulates one of the variables and tries to determine how the manipulation influences other variables, the researcher is conducting a(n) A) observational study. B) experimental study C) independent study. D) confounding study. 5. When two events cannot occur at the same time they are said to be mutually exclusive. A) True B) False 6. One type of combination lock has the numbers 0 to 20 on the dial and 3 digit combinatio with repeat values allowed. What is the probability that you will purchase a lock with the combination 1-1-1? A) 21! B) 213 3! 21! C) D) 213

Explanation / Answer

Solution:-
1. option C) Inferential statistics

2. option C) Continuous   

3. option C) Stratified sampling

4. option B) Experimental study

5. option A) true

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