Answer:
There are a 25% probability that Christine fails the course.
Step-by-step explanation:
We have these following probabilities:
A 50% probability that Christine finds a tutor.
With a tutor, she has a 10% probability of failling.
A 50% probability that Christine does not find a tutor.
Without a tutor, she has a 40% probability of failing.
Probability that she fails:
10% of 50%(fail with a tutor) plus 40% of 50%(fail without a tutor). So
There are a 25% probability that Christine fails the course.
Your going to have to draw it out,but just look for the number on your number line and put a point above the number.
Answer:
1. B
2. C
Step-by-step explanation:
1. B
The sample of any set would be smaller version of a larger group. It is often a subset that contains some or all the characteristics of the main set, or the larger general population. The usage of samples comes into play in statistics when the population sizes of interest are too large for the test to contain all the needed members for it to take place. So, from this question, the sample size is the 325 questionnaires that were returned in the first place.
2. C
I thin the answer is survey with little bias since the voters know what they want. This is because while answering the survey, the voters know who they want to vote for upfront, and didn't need to gave their mind change by anyone on the survey.
Answer:
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Step-by-step explanation:
Answer: There are 350 consumers who purchase frozen yogurt.
Step-by-step explanation:
Since we have given that
Number of consumers polled =360
Number of consumers who purchased ice- cream = 260
Number of consumers who purchased both ice- cream and frozen yogurt = 250
We need to find the number of consumers who purchased frozen yogurt,
Let A denotes who purchased ice-cream
and B denotes who purchased frozen yogurt.
As we know the formula
Hence, there are 350 consumers who purchase frozen yogurt.
