1 It is suggested that the English results at Valley High School have been improving in the last five years. Choose a suitable sampling method to collect data that might be used to give evidence as to whether this is true or not. Collect the sample and save it for use in sections 2.2 and 2.3.
1 It is suggested that the English results at Valley High School have been improving in the last five years. Choose a suitable sampling method to collect data that might be used to give evidence as to whether this is true or not. Collect the sample and save it for use in sections 2.2 and 2.3.
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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Pls do first and third I will rate your solution from 3 I'd but please do both these and typed solution only again saying typed only
Transcribed Image Text:1 It is suggested that the English results at
Valley High School have been improving
in the last five years. Choose a suitable
sampling method to collect data that might
be used to give evidence as
to whether this is true or not.
Collect the sample and save it for use in
sections 2.2 and 2.3.
2 A dog kennel has 120 dogs. The ages of the dogs, in order, are shown below.
1, 1, 1, 1, I, 1, 1. 1, 1, I, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7,
7. 7, 7. 7. 7. 7, 7. 7. 7. 8, 8, 8. 8, 8. 8, 8, 8, 8. 9. 9. 9. 9. 9, 1о, 10, 10,
10, 11, 11, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 15, 16, 16.
a Construct a table of values to represent the ages of the dogs and the frequency of their ages.
b A sample of the population was taken to check the health of the dogs in the kennel. A
systematic sample of every 5 dogs was used. How many dogs were taken for the sample?
c In order to take a sample of 50 dogs, stratified by their age, state the number of dogs of each
age you need to select.
3 In a poll to predict the results in an election,
a sample from the population is taken with
the intention of providing an accurate
forecast. Explain why the sample would be
stratified, and suggest different strata that
might be important.
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