2x^2+28x+98=0 factor completely
1 answer:
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Answer:
D
Step-by-step explanation:
a=
4
a=4
Answer:
We are 95% confident that the proportion of all adults who believe that the shows are either "totally made up" or "mostly distorted" is within 83.9% and 88.1%.
Step-by-step explanation:
Let <em>p </em>= proportion of people who believe that the reality TV shows are either "totally made up" or "mostly distorted".
A random sample of <em>n</em> = 1006 adults are selected. Of these adults 86% believes that the reality TV shows are either "totally made up" or "mostly distorted".
The (1 - <em>α</em>)% confidence interval for the population proportion is:
The (1 - <em>α</em>)% confidence interval for the parameter implies that there is (1 - α)% confidence or certainty that the true parameter value is contained in the interval.
Compute the critical value of <em>z</em> for 95% confidence level as follows:
*Use a <em>z</em>-table.
Compute the 95% confidence interval for the population proportion as follows:
The 95% confidence interval for the proportion of all adults who believe that the shows are either "totally made up" or "mostly distorted" is (0.839, 0.881).
This confidence interval implies that:
We are 95% confident that the proportion of all adults who believe that the shows are either "totally made up" or "mostly distorted" is within 83.9% and 88.1%.