Find the slope of the line going through the points
2 answers:
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Answer:
47, 40, 33, 26 are the first four terms of the sequence.
Step-by-step explanation:
Expression representing the sequence is,
where n = number of term in the sequence
For n = 1,
= 47
For n = 2,
= 47 - 7
= 40
For n = 3,
= 47 - 7(3 -1)
= 47 - 14
= 33
For n = 4,
= 47 - 21
= 26
Therefore, first four terms of the sequence are 47, 40, 33 and 26.
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.