A research center claims that more than 29% of employees in a certain country have changed jobs in the past three years. In a random sample of 220 people from that country, 77 have changed jobs in the past three years. At alphaαequals=0.10, is there enough evidence to support the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Upper H 0H0 and Upper H Subscript aHa. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At most nothing% of employees in the country have changed jobs in the past three years. B. More than nothing% of employees in the country have changed jobs in the past three years. C. The percentage of employees in the country who have changed jobs in the past three years is not nothing%. D. nothing% of employees in the country have changed jobs in the past three years. Let p be the population proportion of successes, where a success is an employee in the country who has changed jobs in the past three years. State Upper H 0H0 and Upper H Subscript aHa. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) A. Upper H 0H0: pgreater than>nothing Upper H Subscript aHa: pless than or equals≤nothing B. Upper H 0H0: pnot equals≠nothing Upper H Subscript aHa: pequals=nothing C. Upper H 0H0: pgreater than or equals≥nothing Upper H Subscript aHa: pless thannothing E. Upper H 0H0: pequals=nothing Upper H Subscript aHa: pnot equals≠nothing F. Upper H 0H0: pless thannothing. C. The rejection region is zgreater than>nothing. D. The rejection region is nothingless than
A research center claims that more than 29% of employees in a certain country have changed jobs in the past three years. In a random sample of 220 people from that country, 77 have changed jobs in the past three years. At alphaαequals=0.10, is there enough evidence to support the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Upper H 0H0 and Upper H Subscript aHa. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. At most nothing% of employees in the country have changed jobs in the past three years. B. More than nothing% of employees in the country have changed jobs in the past three years. C. The percentage of employees in the country who have changed jobs in the past three years is not nothing%. D. nothing% of employees in the country have changed jobs in the past three years. Let p be the population proportion of successes, where a success is an employee in the country who has changed jobs in the past three years. State Upper H 0H0 and Upper H Subscript aHa. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) A. Upper H 0H0: pgreater than>nothing Upper H Subscript aHa: pless than or equals≤nothing B. Upper H 0H0: pnot equals≠nothing Upper H Subscript aHa: pequals=nothing C. Upper H 0H0: pgreater than or equals≥nothing Upper H Subscript aHa: pless thannothing E. Upper H 0H0: pequals=nothing Upper H Subscript aHa: pnot equals≠nothing F. Upper H 0H0: pless thannothing. C. The rejection region is zgreater than>nothing. D. The rejection region is nothingless than
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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Addition Rule of Probability
It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.
Expected Value
When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known as the expectation, is denoted by: E(X).
Probability Distributions
Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosing a card. Each of these events has multiple possibilities. Every such possibility is measured with the help of probability. To be more precise, the probability is used for calculating the occurrence of events that may or may not happen. Probability does not give sure results. Unless the probability of any event is 1, the different outcomes may or may not happen in real life, regardless of how less or how more their probability is.
Basic Probability
The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the probability value 1 indicates that the event will occur. Sum of the probability value must be 1. The probability value is never a negative number. If it happens, then recheck the calculation.
Topic Video
Question
A research center claims that more than
29%
of employees in a certain country have changed jobs in the past
three
years. In a random sample of
220
people from that country,
77
have changed jobs in the past
three
years. At
alphaαequals=0.10,
is there enough evidence to support the center's claim? Complete parts (a) through (e) below.(a) Identify the claim and state
Upper H 0H0
and
Upper H Subscript aHa.
Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice.
(Type an integer or a decimal. Do not round.)
At most
nothing%
of employees in the country have changed jobs in the past
three
years.More than
nothing%
of employees in the country have changed jobs in the past
three
years.The percentage of employees in the country who have changed jobs in the past
three
years is not
nothing%.
nothing%
of employees in the country have changed jobs in the past
three
years.Let p be the population proportion of successes, where a success is an employee in the country who has changed jobs in the past
three
years. State
Upper H 0H0
and
Upper H Subscript aHa.
Select the correct choice below and fill in the answer boxes to complete your choice.(Round to two decimal places as needed.)
Upper H 0H0:
pgreater than>nothing
Upper H Subscript aHa:
pless than or equals≤nothing
Upper H 0H0:
pnot equals≠nothing
Upper H Subscript aHa:
pequals=nothing
Upper H 0H0:
pgreater than or equals≥nothing
Upper H Subscript aHa:
pless than<nothing
Upper H 0H0:
pless than or equals≤nothing
Upper H Subscript aHa:
pgreater than>nothing
Upper H 0H0:
pequals=nothing
Upper H Subscript aHa:
pnot equals≠nothing
Upper H 0H0:
pless than<nothing
Upper H Subscript aHa:
pgreater than or equals≥nothing
(b) Find the critical value(s) and identify the rejection region(s).
Identify the critical value(s) for this test.
z 0z0equals=nothing
(Round to two decimal places as needed. Use a comma to separate answers as needed.)
Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) to complete your choice.
(Round to two decimal places as needed.)
The rejection region is
zless than<nothing.
The rejection regions are
zless than<nothing
and
zgreater than>nothing.
The rejection region is
zgreater than>nothing.
The rejection region is
nothingless than<zless than<nothing.
(c) Find the standardized test statistic z.
zequals=nothing
(Round to two decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim.
▼
Fail to reject
Reject
▼
is not
is
▼
reject
support
Click to select your answer(s).
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