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Class Time:

Name:

Student learning outcomes:

  • The student will calculate the 90% confidence interval for proportion of students in this school that were born in this state.
  • The student will interpret confidence intervals.
  • The student will examine the effects that changing conditions has on the confidence interval.

Collect the data

  • Survey the students in your class, asking them if they were born in this state. Let X size 12{X} {} = the number that were born in this state.
    • A

      n size 12{n} {} = ____________
    • B

      x size 12{x} {} = ____________
  • Define the Random Variable P ' size 12{P'} {} in words.
  • State the estimated distribution to use.

Find the confidence interval and error bound

  • Calculate the confidence interval and the error bound.
    • A

      Confidence Interval:
    • B

      Error Bound:
  • How much area is in both tails (combined)? α =
  • How much area is in each tail? α 2 =
  • Fill in the blanks on the graph with the area in each section. Then, fill in the number line with the upper and lower limits of the confidence interval and the sample proportion.
  • How large a sample would be needed to ensure that the error for the 90% confidence interval is only 5%? Use the previous data as an estimate for p.
  • Recalculate the sample size assuming there is no previous data.

Describe the confidence interval

  • In two to three complete sentences, explain what a Confidence Interval means (in general), as if you were talking to someone who has not taken statistics.
  • In one to two complete sentences, explain what this Confidence Interval means for this particular study.
  • Using the above information, construct a confidence interval for each given confidence level given.
    Confidence level EBP / Error Bound Confidence Interval
    50%
    80%
    95%
    99%
  • What happens to the EBP as the confidence level increases? Does the width of the confidence interval increase or decrease? Explain why this happens.

Questions & Answers

the diagram of the digestive system
Assiatu Reply
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
what is cell divisoin?
Aron Reply
Diversity of living thing
ISCONT
what is cell division
Aron Reply
Cell division is the process by which a single cell divides into two or more daughter cells. It is a fundamental process in all living organisms and is essential for growth, development, and reproduction. Cell division can occur through either mitosis or meiosis.
AI-Robot
What is life?
Allison Reply
life is defined as any system capable of performing functions such as eating, metabolizing,excreting,breathing,moving,Growing,reproducing,and responding to external stimuli.
Mohamed
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Source:  OpenStax, Labs for collaborative statistics - teegarden. OpenStax CNX. Aug 18, 2008 Download for free at http://cnx.org/content/col10562/1.2
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