Construct and report the 95% confidence intervals for the proportions of first-born boys, separately for each racial group. Health and medical homework help
In this discussion, we will investigate confidence intervals for binomial probabilities. The discussion is in two parts.
- Return to the data you had generated in the second part of the
Week Two assignment. You should have total numbers of first-born boys
and girls in your state between the years 2007 and 2012 separately by
racial group: American Indians or Alaska Natives, Asian or Pacific
Islanders, Black or African Americans, and Whites. For the first part of
this discussion, construct and report the 95% confidence intervals for
the proportions of first-born boys, separately for each racial group.
(Use the normal approximation to the binomial distribution.) Comment on
the confidence intervals: can you infer from the confidence intervals
that the proportions of first-born boys differ among the racial groups?
Explain what the widths of the confidence intervals tell you.
- Leading up to elections, you often hear results of polls of
voters’ preferences, with statements such as: “This poll was taken from a
random sample of 600 potential voters, and has an accuracy exceeding
96%.” You may want to interpret the accuracy statement in terms of
“margin of error”, as explained in the text, Section 6-2. Remember, the
width of a confidence interval is a measure of the precision of the
estimate.
https://www.dropbox.com/s/9oc9reuw5dvcos0/MHA610_week3_discussion.mp4?dl=

