II Past studies have indicated that the percentage of smokers was estimated to be about 31%. Given the newsmoking cessation programs that have been implemented, you now believe that the percentage of smokershas reduced. You randomly surveyed 1650 people and found that 474 smoke. Use a 0.05 significance levelto test the claim that the percentage of smokers has reduced.a) Identify the null and alternative hypotheses?Ho: (? ♥H1: ? vb) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?O left-tailedO right-tailedO two-tailedc) Identify the appropriate significance level.d) Calculate your test statistic. Write the result below, and be sure to round your final answer to twodecimal places.e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimalplaces.f) Do you reject the null hypothesis?O We reject the null hypothesis, since the p-value is less than the significance level.O We reject the null hypothesis, since the p-value is not less than the significance level.O We fail to reject the null hypothesis, since the p-value is less than the significance level.O We fail to reject the null hypothesis, since the p-value is not less than the significance level.g) Select the statement below that best represents the conclusion that can be made.O There is sufficient evidence to warrant rejection of the claim that the percentage of smokers is lessthan 31%.O There is not sufficient evidence to warrant rejection of the claim that the percentage of smokers isless than 31%.O The sample data support the claim that the percentage of smokers is less than 31%.O There is not sufficient sample evidence to support the claim that the percentage of smokers is lessthan 31%

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Past studies have indicated that the percentage of smokers was estimated to be about 31%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1650 people and found that 474 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the null and alternative hypotheses? Но: (2 v H1: ? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed O right-tailed two-tailed c) Identify the appropriate significance level.

Past studies have indicated that the percentage of smokers was estimated to be about 31%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1650 people and found that 474 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the null and alternative hypotheses? Но: (2 v H1: ? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed O right-tailed two-tailed c) Identify the appropriate significance level.

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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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

Past studies have indicated that the percentage of smokers was estimated to be about 31%. Given the new
smoking cessation programs that have been implemented, you now believe that the percentage of smokers
has reduced. You randomly surveyed 1650 people and found that 474 smoke. Use a 0.05 significance level
to test the claim that the percentage of smokers has reduced.
a) Identify the null and alternative hypotheses?
Ho: (? ♥
H1: ? v
b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?
O left-tailed
O right-tailed
O two-tailed
c) Identify the appropriate significance level.
d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two
decimal places.
e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal
places.
f) Do you reject the null hypothesis?
O We reject the null hypothesis, since the p-value is less than the significance level.
O We reject the null hypothesis, since the p-value is not less than the significance level.
O We fail to reject the null hypothesis, since the p-value is less than the significance level.
O We fail to reject the null hypothesis, since the p-value is not less than the significance level.
g) Select the statement below that best represents the conclusion that can be made.
O There is sufficient evidence to warrant rejection of the claim that the percentage of smokers is less
than 31%.
O There is not sufficient evidence to warrant rejection of the claim that the percentage of smokers is
less than 31%.
O The sample data support the claim that the percentage of smokers is less than 31%.
O There is not sufficient sample evidence to support the claim that the percentage of smokers is less
than 31%

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