A leaky toilet in Mr. Walker's house increases his water bill by $2.14 each day. The toilet leaks for 19 days in April and all 3
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Answer:
Our population of interest represent all the adults in United states who never travel using commercial airlines.
The sample on this case represent the people surveyed in United States who never travel using commercial airlines.
For this case the value obtained represent a statistic since is a value who represent the sample not the population. Our population parameter is not known and is given by
Step-by-step explanation:
A statistic is a "characteristic of a sample". And the statistic allows "estimate the value of a population parameter".
A parameter is a value who represent the population of interest.
For this case we have a sample size of size n = 2276
The proportion estimated of people that nevel travel using commercial airlines was:
or 33%
Our population of interest represent all the adults in United states who never travel using commercial airlines.
The sample on this case represent the people surveyed in United States who never travel using commercial airlines.
For this case the value obtained represent a statistic since is a value who represent the sample not the population. Our population parameter is not known and is given by
Let the original fraction be
Now let's increase both numerator and denominator by 2:
This produces a 1/12 increase:
The left hand side can be rearranged as
Invert both sides:
Solve the quadratic equation:
So, in the first case, the original fraction is
In the second case, we have