3. A survey on the drinking habits of Filipinos estimated the percentage of adults who drink beer occasionally. Of the 1516 adults interviewed, 985 said they drank. Construct a 95% confidence interval for the population proportion of Filipino adults who do not drink beer.
3. A survey on the drinking habits of Filipinos estimated the percentage of adults who drink beer occasionally. Of the 1516 adults interviewed, 985 said they drank. Construct a 95% confidence interval for the population proportion of Filipino adults who do not drink beer.
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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answer number 3 please
Transcribed Image Text:1. Itis known from past records the grade point average of senior students is normally distributed
with a standard deviation of 0.3. A researcher collects the grade point average of 36 sample
students and found out that their mean grade is 2.6. Find a 95% confidence interval for the
grade point average of the entire senior students.
2. In a random sample of 500 students in SNHS eating lunch, it was found out that 160 preferred
sea foods. Construct a 90% confidence interval for the population proportion of all students
in SNHS who eat sea foods.
3. A survey on the drinking habits of Filipinos estimated the percentage of adults who drink beer
occasionally. Of the 1516 adults interviewed, 985 said they drank. Construct a 95%
confidence interval for the population proportion of Filipino adults who do not drink beer.
4. A sociologist wants information on the number of children per household in a certain
barangay. To do this, she randomly selected 10 households in that barangay and recorded
the following number of children.
3
2
3
4
5
1
3
Construct a 90% confidence interval for the average number of children in that barangay.
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