Answer:
The population parameter of this study is the population mean.
Step-by-step explanation:
A population parameter is a numerical measure representing a certain characteristic of the population. For example, population mean, population variance, population proportion, and so on.
The population parameter is computed using all the values of the population.
The population parameter can be estimated using the sample statistic. If the value of the population parameter is not known, then a random sample of large size, say <em>n</em> ≥ 30 can be selected from the population and the statistic value can be computed. This statistic value is considered as the point estimate of the parameter. It is also known as the unbiased estimator of the parameter.
In this case the survey involved sampling of 1500 Americans to estimate the mean dollar amount that Americans spent on health care in the past year.
The sample selected is used to compute the sample mean dollar amount that Americans spent on health care.
So, the population parameter of this study is the population mean.
It should be x=11 instead of x=-11, so
he is not correct because he made a sign error.
<span>a - {5b - [a - (3b - 2c) + c - (a - 2b - c)]}
= </span><span>a - 5b - a - 3b + 2c + c - a + 2b + c
= -a - 6b + 4c
answer is </span><span>-a - 6b + 4c (first choice)</span>
3900 is 3900/2900 times more then 2900
3900/2900 is around 1.34
so the price increase would be about 34%
