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Chapter 1: Q. 43 (page 52)

Ski resorts are interested in the mean age that children take their first ski and snowboard lessons. They need this information to plan their ski classes optimally.

Short Answer

Expert verified

a. All youngsters who are taking their first ski or snowboard lessons make up the population.

b. This is a sampling of the youngsters in the group.

c. The population mean age of youngsters taking their first snowboard instruction is the parameter.

d. The sample mean age of youngsters who take their first snowboard instruction is the statistic.

e. X is the age of a youngster who is learning to ski or snowboard for the first time.

f. Values for X, such as 3,7, and so on..

Step by step solution

01

Introduction

Apopulationisadistinctgroupofpeople,whetheritisacountryoracollectionofpeoplewhoshareasimilarattribute.
A population is the group of people from which a statistical sample is selected for a research in statistics.
As a result, a population may be defined as a collection of people who are linked by a common characteristic.
02

Explanation for a

The demographic will be youngsters who are taking their first ski and snowboard lessons, according to the information supplied.

03

Explanation for b

Based on the information supplied, a sample of this data will be drawn from a randomly selected group of children.

04

Explanation for c

The population mean age of children who take their first ski and snowboard lessons will be the parameter of this data, according to the details supplied.

05

Explanation for d

The sample mean age of youngsters that take their first ski and snowboard lessons will be the statistic of this data, according to the specified details.

06

Explanation for e

The age of a single child will be the variable of this data, according to the specified details.

07

Explanation for f

According to the provided details, the data will be the value of the variable like 10 years or 12 years and so on.

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Most popular questions from this chapter

Use the following data to answer the next five exercises: A pair of studies was performed to measure the effectiveness of a new software program designed to help stroke patients regain their problem-solving skills. Patients were asked to use the software program twice a day, once in the morning and once in the evening. The studies observed 200stroke patients recovering over a period of several weeks. The first study collected the data in Table 1.31. The second study collected the data in Table 1.32.

Patients who used the software were also a part of an exercise program whereas patients who did not use the software were not. Does this change the validity of the conclusions from Exercise 1.31?

A marketing company is interested in the proportion of people who will buy a particular product.

A fitness center is interested in the mean amount of time a client exercises in the center each week.

Seven hundred and seventy-one distance learning students at Long Beach City College responded to surveys in the 2010-11academic year. Highlights of the summary report are listed in Table 1.39.

a. What percent of the students surveyed do not have a computer at home?

b. About how many students in the survey live at least 16 miles from campus?

c. If the same survey were done at Great Basin College in Elko, Nevada, do you think the percentages would be the same? Why?

Suppose you want to determine the mean number of cans of soda drunk each month by students in their twenties at your school. Describe a possible sampling method in three to five complete sentences. Make the description detailed.
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