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For a confidence level of 95% with a sample size of 12, find the critical t value.

For a confidence level of 95% with a sample size of 12, find the critical t value.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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For a confidence level of 95% with a sample size of 12, find the critical t value. Round your answer to three decimal places.

 
You measure 43 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population standard deviation is 8 ounces. Based on this, construct a 95% confidence interval for the true population mean dog weight. Round your answers to two decimal places.
Transcribed Image Text:You measure 43 dogs' weights, and find they have a mean weight of 80 ounces. Assume the population standard deviation is 8 ounces. Based on this, construct a 95% confidence interval for the true population mean dog weight. Round your answers to two decimal places.
Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 9.6 and a standard deviation of 1.5. What is the 98% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).
Transcribed Image Text:Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 9.6 and a standard deviation of 1.5. What is the 98% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).
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