(a) A city manager wants to poll residents about a park renovation.Which of the following best describes a cluster sample of residents?O The first 72 residents who walk into city hall one day are easilyaccessible. So, the city manager selects these residents.O The city manager forms groups of 8 residents based on the streetsthe residents live on. Then, she selects all of the residents in 9randomly chosen groups.O The city manager takes a list of the residents and selects every 3rdresident until 72 residents are selected.(b) A host on a cruise ship wants to collect data on the time passengersspend at various activities on board. Which of the following bestdescribes a stratified sample of passengers?O The host forms groups of 10 passengers based on the passengers'ages. Then, he randomly chooses 5 groups and selects all of thepassengers in these groups.O The host forms 2 groups of passengers based on the levels of theship that the passengers' cabins are on. Then, he selects 25passengers at random from each group.O The host selects the first 50 passengers who board because thesepassengers are easily accessible.(c) A botanist at a nursery wants to inspect the health of the plants atthe nursery. Which of the following best describes a systematicsample of plants?O The botanist takes a list of the plants and selects every 6th plantuntil 60 plants are selected.O The botanist forms 5 groups of plants based on the ages of theplants (in months). Then, he selects 12 plants at random from eachgroup.O The botanist assigns each plant a different number. Using arandom number table, he draws 60 of those numbers at random.Then, he selects the plants assigned to the drawn numbers. Everyset of 60 plants is equally likely to be drawn using the randomnumber table.

When the population is not homogeneous, the entire population is divided into several homogeneous…

a) A city manager wants to poll residents about a park renovation. Which of the following best describes a cluster sample of residents? O The first 72 residents who walk into city hall one day are easily accessible. So, the city manager selects these residents. O The city manager forms groups of 8 residents based on the streets the residents live on. Then, she selects all of the residents in 9 randomly chosen groups. The city manager takes a list of the residents and selects every 3rd resident until 72 residents are selected. 5) A host on a cruise ship wants to collect data on the time passengers spend at various activities on board. Which of the following best

a) A city manager wants to poll residents about a park renovation. Which of the following best describes a cluster sample of residents? O The first 72 residents who walk into city hall one day are easily accessible. So, the city manager selects these residents. O The city manager forms groups of 8 residents based on the streets the residents live on. Then, she selects all of the residents in 9 randomly chosen groups. The city manager takes a list of the residents and selects every 3rd resident until 72 residents are selected. 5) A host on a cruise ship wants to collect data on the time passengers spend at various activities on board. Which of the following best

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

(a) A city manager wants to poll residents about a park renovation.
Which of the following best describes a cluster sample of residents?
O The first 72 residents who walk into city hall one day are easily
accessible. So, the city manager selects these residents.
O The city manager forms groups of 8 residents based on the streets
the residents live on. Then, she selects all of the residents in 9
randomly chosen groups.
O The city manager takes a list of the residents and selects every 3rd
resident until 72 residents are selected.
(b) A host on a cruise ship wants to collect data on the time passengers
spend at various activities on board. Which of the following best
describes a stratified sample of passengers?
O The host forms groups of 10 passengers based on the passengers'
ages. Then, he randomly chooses 5 groups and selects all of the
passengers in these groups.
O The host forms 2 groups of passengers based on the levels of the
ship that the passengers' cabins are on. Then, he selects 25
passengers at random from each group.
O The host selects the first 50 passengers who board because these
passengers are easily accessible.
(c) A botanist at a nursery wants to inspect the health of the plants at
the nursery. Which of the following best describes a systematic
sample of plants?
O The botanist takes a list of the plants and selects every 6th plant
until 60 plants are selected.
O The botanist forms 5 groups of plants based on the ages of the
plants (in months). Then, he selects 12 plants at random from each
group.
O The botanist assigns each plant a different number. Using a
random number table, he draws 60 of those numbers at random.
Then, he selects the plants assigned to the drawn numbers. Every
set of 60 plants is equally likely to be drawn using the random
number table.

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