The Department of Education would like to test the hypothesis that the average debt load of graduating students with a bachelor's degree is equal to $18,300. A random sample of 42 students had an average debt load of $19,500. It is believed that the population standard deviation for student debt load is $3,800. The α is set to 0.05. The confidence interval for this hypothesis test would be ____________________.**Multiple Choice**- ( ) [$15,681.43, $20,918.67]- ( ) [$16,401.63, $20,198.37]- ( ) [$17,842.23, $18,757.77]- ( ) [$18,350.75, $20,649.25]

Answered: The Department of Education would like…

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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Suppose a study was conducted of community colleges in California to determine the average cost of tuition for in-state students. The study consisted of 45 community colleges from California. Based on the sample data, the average tuition was $1,440 and the standard deviation was $267. Use this information to construct and interpret a 92% confidence interval for the true average tuition of all California community colleges. Make sure to check any relevant assumptions and state how you determined whether or not they were satisfied (Be as specific as possible). Make sure to type your confidence interval in an interval format with each bound rounded to 3 decimal places [i.e. (12.345, 45.678)]
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In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $41 and standard deviation of $6. Find the margin of error at a 90% confidence level.
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In a survey, 26 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40 and standard deviation of $6. Find the margin of error at a 90% confidence level.
In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $42 and standard deviation of $4. Find the margin of error at a 80% confidence level. Give your answer to two decimal places.
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