Suppose that a friend of yours says that they were reading about confidence intervals and ask you the following questions:Part 1When they encountered the symbols a and mu (u) they ask "What's the difference between what these symbols represent, and what does thathave to do with confidence intervals?" (make sure you answer both parts of the question).1.Part 2When building a confidence interval, we use a point estimate and margin of error. Explain what these two terms mean, and discuss how themargin of error is related to the sample size.

Here's, x-bar and mu, first of all x-bar is the sample mean and mu is the population mean. We use…

Answered: Suppose that a friend of yours says…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Suppose that a friend of yours says that they were reading about confidence intervals and ask you the following questions: Part 1 When they encountered the symbols pand p. "What's the difference between what these symbols represent, and what does that have to do with confidence intervals?" (make sure you answer both parts of the question). Part 2 Why do we not usually use 99.99% confidence level when constructing a confidence interval?
Part 1 of 3 A researcher was investigating the size of math departments in Texas colleges. She believed the population standard deviation was 1.9. A sample of 42 colleges found their mean was 12.5. Find the 3-decimal small value of the 95% confidence interval of the mean. Part 2 of 3: Find the 3-decimal large value of the 95% confidence interval of the mean. Part 3 of 3: Find the 3-decimal margin of error
I'm stuck on part 2. Can you work the problem and explain how to get the answer to part B? If it can be put into the calculator, I can't remember the process. Please explain. Thank you. Translate the statement into a confidence interval. Approximate the level of confidence. In a survey of 1100 adults in a country, 68% think teaching is one of the most important jobs in the country today. The survey's margin of error is ±4%. Question content area bottom Part 1 The confidence interval for the proportion is . 64.64,. 72.72. (Round to three decimal places as needed.) Part 2 The interval is a enter your response here% confidence interval. (Round to one decimal place as needed.)
Some of the following questions might be more challenging, but we want you to wrestle through them and ask for clarification along the way. We hope that, ultimately, working through these problems will strengthen your understanding of the big ideas behind confidence intervals.12. What proportion of college students pursue academic minors? To estimate this unknownpopulation proportion, a researcher gathers a random sample of data and constructs a95% confidence interval. The interval ends up being from 0.46 to 0.62. From thisinformation, we know the sample proportion must be ____________ and the margin oferror must be ______________.
Part 2
please sir solve last the two parts
What is meant by the term “90% confident” when constructing a confidence interval for a mean? If we took repeated samples, approximately 90% of the samples would produce the same confidence interval. If we took repeated samples, approximately 90% of the confidence intervals calculated from those samples would contain the sample mean. If we took repeated samples, approximately 90% of the confidence intervals calculated from those samples would contain the true value of the population mean. If we took repeated samples, the sample mean would equal the population mean in approximately 90% of the samples.
Solve it correctly please. I
Let's shake on it: A random sample of 12-ounce milkshakes from 11 fast-food restaurants had the following number of calo 642 504 473 580 450 375 700 608 476 613 472 Send date to Excel Assume the population standard deviation is o =87.
True or False. Provide explanation!
Why is it that when we increase our confidence level in a confidence interval that the interval gets wider?
#10 please

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