a. A random sample of 180 students from a private kindergarten produces mean weight of 46.3kg with sample standard.deviation 4.7. Construct a 95% confidence interval for the mean weights of all students at the kindergarten. b. A random sample of older people were asked "Would you like to turn back to younger years if you were given the opportunity for a second time? Of the 250 people surveyed, 195 of them said that they would do so. Find the value of p-hat and q-hat. Answer up to 2 decimal places. Show your works.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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a. A random sample of 180 students from a private kindergarten produces mean weight of 46.3kg with sample standard.deviation 4.7. Construct a 95% confidence interval
for the mean weights of all students at the kindergarten.
b. A random sample of older people were asked "Would you like to turn back to younger years if you were given the opportunity for a second time?" Of the 250 people
surveyed, 195 of them said that they would do so. Find the value of p-hat and q-hat.
Answer up to 2 decimal places. Show your works.
Transcribed Image Text:a. A random sample of 180 students from a private kindergarten produces mean weight of 46.3kg with sample standard.deviation 4.7. Construct a 95% confidence interval for the mean weights of all students at the kindergarten. b. A random sample of older people were asked "Would you like to turn back to younger years if you were given the opportunity for a second time?" Of the 250 people surveyed, 195 of them said that they would do so. Find the value of p-hat and q-hat. Answer up to 2 decimal places. Show your works.
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