MATH 221B

Brigham Young University-Idaho

Here are the best resources to pass MATH 221B. Find MATH 221B study guides, notes, assignments, and much more.

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Exam (elaborations)

MATH 221B W06 Final Project Completed Project (Completed Updated Data Sheet) | 2025 Updates with complete solutions.
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September 2025

2025/2026

A+
MATH 221B W06 Final Project Completed Project (Completed Updated Data Sheet) | 2025 Updates with complete solutions.
Wiseman
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MATH 221B W04 Final Project Design the Study (With excel data) | 2025 Update with complete solutions.
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September 2025

2025/2026

A+
MATH 221B W04 Final Project Design the Study (With excel data) | 2025 Update with complete solutions.
Wiseman
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Exam (elaborations)

L24 Quiz Group Meeting Biostatistics Complete Q&A Latest updated fall 2022.
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December 2022

2022/2023
Question 2 1 / 1 pts Which of the following variables is/are quantitative? (Mark all that apply.) The telephone number of a randomly selected business in town. The 3 most common brands of car found in the US. Correct! The number of people in a randomly selected classroom on campus. Question 3 1 / 1 pts Students in an Introductory Statistics class at BYU-Idaho were studying prices of cold cereal at grocery stores in Rexburg. To get a sample of cold cereal prices, they went to Albertson...
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Exam (elaborations)

L24 Quiz_ Group Meeting_ Biostatistics (Complete Answered & Explained)
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December 2022

2022/2023
Students in an Introductory Statistics class at BYU-Idaho were studying prices of cold cereal at grocery stores in Rexburg. To get a sample of cold cereal prices, they went to Albertson's and rolled a die to decide which box from the left of the top shelf they would start on. They then recorded every 6th cereal after the first, moving from left to right down the shelves, recording the name, size, and price of each cereal in their sample. Is this study an experiment or an observational stud...
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L16 Quiz_ Homework_ Biostatistics Questions & Answers/Rationales > 2022/2023.
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December 2022

2022/2023
Give the standard deviation of the sample distribution of p̂. Give your answers in decimal form and round to three decimal places. (Example: 0.398) 0.018
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Exam (elaborations)

Group Quiz #19 A+ GRADED Latest 2022-2023.
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December 2022

2022/2023
A public opinion poll surveyed a simple random sample of 1000 voters. Respondents were classified by gender (female or male) and by voting preference (Republican, Democrat, or Independent). The results are presented here: In this set of questions, we will explore the research question, “Do men’s voting preferences differ significantly from women’s voting preferences?” Use a level of significance of α=0.05.
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L21 Quiz_ Homework A+ GRADED Latest 2022-2023.
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December 2022

2022/2023
Data was collected on homes for sale in Madison County as of January 2011. Information on the listings such as price, size of the home, and style were recorded. The data are recorded in MadisonCountyRealE . Create a scatterplot of the price of homes (ListPrice) compared with how old the homes are (Age). Select the answer that best describes the data illustrated in the scatterplot. Linear with a moderate negative association. Linear with a moderate positive association. Linear with a strong...
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Exam (elaborations)

L22 Quiz_ Group Meeting_ Biostatistics (answered) 2022-2023
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December 2022

2022/2023
While you are required to work together on this quiz, each member of the group must submit his or her own answers in order to receive credit. If needed, here's a link to the Normal Probability Applet . You will need the following data set MathSelfE When calculating anything, please remember to round to three decimal places, unless otherwise specified. DO NOT ROUND until your calculation is complete.
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Exam (elaborations)

MATH 221B - L24 Quiz Group Meeting Biostatistics. Questions and Answers.
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August 2022

2022/2023

A+
MATH 221B - L24 Quiz Group Meeting Biostatistics. Questions and Answers. Question 1 1 / 1 pts I met with my group and completed this Group Quiz with them. Correct! True Question 2 1 / 1 pts Which of the following variables is/are quantitative? (Mark all that apply.) The telephone number of a randomly selected business in town. The 3 most common brands of car found in the US. Correct! The number of people in a randomly selected classroom on campus. Question 3 1 / 1 pts Students i...
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