Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 2261 people and found that 702 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. Identify the null and alternative hypotheses? H0:                H1:  Identify the appropriate significance level. Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.

Q: Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the…

A: Two proportion Z test is applicable here

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending…

A:

Q: Find the test statistic. Round your final answer to two decimal places. Find the p-value. Round to…

A: We have given that  Population proportion p = 57% = 0.57 Favourable cases, X = 113 Sample size, n =…

Q: The US Department of Energy reported that 49% of homes were heated by natural gas. A random sample…

A: The objective of this question is to test the claim that the proportion of homes in Oregon that are…

Q: According to one source, 51% of plane crashes are due at least in part to pilot error. Suppose that…

A: claim : p ≠ 0.51n =100x = 66α = 0.05

Q: ??

A: Step 1: List the given values. We are given the following:Number of homes that were heated by…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the…

A: Answer: From the given data, Population proportion (P) = 33% = 0.33 Sample size (n) = 1875 x = 436…

Q: Suppose that according to your company, the average salary for middle managers was 105,000. You…

A: (a)   Determine the type of test must be run.   The type of test that must be run is hypothesis…

Q: a. What are the correct hypotheses? (Select the correct symbols and use decimal values not…

A: It is given that  Population proportion, p = 52% = 0.52 Favourable cases, X = 142 Sample size, n =…

Q: Suppose the Humane Society claims that 30% of U.S. households own cats. You believe your community…

A:

Q: A Pew poll found that in a sample of 1002 adults, 621 had a social media account. The study was…

A: given, x1 = 621                              x2 = 631 n1 = 1002                            n1 = 971…

Q: A hypothesis test is to be conducted using a .05 significance level. The null hypothesis is that the…

A:

Q: A news article that you read stated that 52% of voters prefer the Democratic candidate. You think…

A: Population proportion()=52%=0.52Sample proportionNote: As per guidelines only first three subparts…

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A: State the Null and alternate hypotheses: The two categories of interest are the “Amount of smoking”…

Q: he US Department of Energy reported that 52% of homes were heated by natural gas. A random sample of…

A: Given that:The proportion of homes that were heated by natural gas is .Sample size, The number of…

Q: Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate…

A:

Q: What is the test statistic? What is the p-value? How do we interpret the results, in context of our…

A: The test hypotheses are: Null hypothesis: H0: μ = 32. Alternative hypothesis: H1: μ ≠ 32.

Q: According to the Pew Research Center, 14% of adults rate basketball as their favorite sport. Your…

A: sample size(n)=120 x=12 significance level(α)=0.05 claim is that the proportion may be lower than…

Q: A study is designed to investigate whether there is a difference in response to various treatments…

A: Given : Observed frequency Oi   WORSENED NO EFFECT IMPROVED  TOTAL T1 22 14 14 50 T2 14 15 21…

Q: Select the most appropriate response. Five years ago, a survey found that the proportion of city…

A: Solution:  The null and alternative hypotheses are:

Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…

A:

Q: D 2 A study of seat belt users and nonusers yielded the randomly selected sample data summarized in…

A: The table shows the seat belt users and nonusers yielded and the amount of smoking.

Q: According to a report on consumer fraud and identity theft, 24% of all complaints for a year were…

A: given data, claim:p>0.24x=857n=3401α=0.05we have to complete hypothesis for the given data,

Q: 7. According to the February 2008 Federal Trade Commission report on consumer fraud and identity…

A: Solution: Given information: n= 1435 Sample size of complaints  x= 322 complaints of identity theft…

Q: The US Department of Energy reported that 51% of homes were heated by natural gas. A random sample…

A: The random variable heated by natural gas follows normal distribution. The sample size is 312. The…

Q: Use the following information to answer the question. Studies show that since the pandemic started,…

A: Given R output  Studies show that since the pandemic started, screen time has increased…

Q: how many of the 200 tests, using a significance level of 5%, will incorrectly find significance

A: Here given  We are conducting many hypothesis tests to test a claim. Assuming the null hypothesis is…

Q: A news article that you read stated that 58% of voters prefer the Democratic candidate. You think…

A: The following information is provided: The sample size is N=300N = 300, the number of favorable…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 32%. Given the…

A: Given P=32%=0.32 Sample size (n)=1820 X=532 Significance level=0.05

Q: Are freshmen psychology majors more likely to change their major before they graduate compared to…

A: Given Information :   344 of the 618 freshmen psychology majors from a recent study changed their…

Q: Game consoles: A poll taken by the Software Usability Research Laboratory surveyed 341 video gamers,…

A: From the given information we have given thatn = 341x = 110p = 25% = 0.25Significance level (α) =…

Q: Report a Chi-Square test of Independence and use a 5% significance level. Explain the potential…

A: Hypotheses: The two categories of interest are the “Treatment received” and “Recidivism rate”. The…

Q: a poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a 0.05…

A: Given n=1018 P=0.25 P-cap=0.22

Q: Recently, a health organization estimated that the flu vaccine was 75​% effective against the…

A: a health organization estimated that the flu vaccine was 75​% effective against the influenza B…

Q: In 2011, a U.S. Census report determined that 66% of college students are working students. A…

A: Given that  Sample size n =139 Favorable cases x =87 Sample proportion p^=x/n  =87/139 =0.6259

Q: A writing test is given to incoming freshman at a state university before and after they complete a…

A: The random variable attitudes follow normal distribution. There are two dependent samples which are…

Q: The US Department of Energy reported that 49% of homes were heated by natural gas. A random sample…

A: The objective of this question is to test the claim that the proportion of homes in Oregon that are…

Q: Hypothesis Testing: Means and Proportions According to a 2017 survey, 80% of Americans used at…

A: Given that  Sample size n =200 Favorable cases x =154 Sample proportion p^=x/n  =154/200 =0.77

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

Q: proportion of homes in Oregon that were heated by natural gas is different than what the DOE…

A: Given data number of success , x= 132 sample size, n =331 population proportion,p= 0.48…

Q: Make the decision rule. (Negative amount should be indicated by a minus sign. Round your answer to 2…

A: Given that Sample size n = 10000 Number of deaths due to lung cancer, X = 6 Level of significance =…

Q: According to a report on consumer fraud and identity theft, 24% of all complaints for a year were…

A: The hypothesized proportion is 0.24.

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.