Help pleasee ...............
1 answer:
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Answer:
The rule depends on the scale factor.
Step-by-step explanation:
Hi there,
1) Many, I'd say mostly, dilations is centered at the origin (0,0) of the cartesian plane. Like the picture below.
2) So now, what's left to do is what is the scale factor? What coefficient that multiplies the original rectangle URST, will result the U'R'S'T'?
3) Since no coordinates, no options or any numerical value were given, then I've made one example.
Check below
If you do have the coordinates of each point then divide each coordinate this way
Answer:
The 99% confidence interval for the fraction of US adult Twitter users who get some news on Twitter is (0.4872, 0.6018). It means that we are 99% sure that the true proportion of US adult Twitter users who get some news on Twitter is between 0.4872 and 0.6018.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of , and s is the standard error.
54% of US adult Twitter users get at least some news on Twitter.
This means that
The standard error for this estimate was 2.4%
This means that
99% confidence level
So , z is the value of Z that has a pvalue of
, so
The lower bound is:
The upper bound is:
The 99% confidence interval for the fraction of US adult Twitter users who get some news on Twitter is (0.4872, 0.6018). It means that we are 99% sure that the true proportion of US adult Twitter users who get some news on Twitter is between 0.4872 and 0.6018.