Use the 6 steps of hypothesis testing to conduct a T test You are a sprint coach and you believe you have a method of a racer starting that will improve times in 40-yard dash. The average for the whole track team in the 40 is 4.8 seconds. You select a sample of 30 athletes and teach them the new method. The sample has an average time of 4.56 with a std dev of 1.9 seconds. Did the new method improve times?

Q: A new drug is being tested. In the treatment group, 178 out of 250 patients show a reduction is…

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Q: W6 Q4 (thanks in advance for the help) Please help me to -Identify the test statistic for this…

A: We have given that  n=289 , X=118 Alpha=0.01

Q: Using the steps in hypothesis testing, test the following hypotheses using the appropriate test…

A: Since you have posted multiple questions , we will solve first question  for you. To get the…

Q: Last year, 41% of business owners gave a holiday gift to their employees. A survey of business…

A: Given, 41% of business owners gave a holiday gift to their employees A survey of business owners…

Q: Historically, voter turnout for political elections in Texas have been reported to be 54%. You have…

A: we have given that  sample size N=90  ,favorable cases X=54 , population proportion P=54%=0.54…

Q: The Chi-square test statistic is = 18.75. What would I compare that to if I wanted to use that test…

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Q: Use the following scenario to conduct a hypothesis test.  You will again go through the different…

A: Given: p = 0.58 x = 364 n = 682 α = 0.05

Q: to understand the data set

A: The hypothesis testing is used to make inferences about the sample and generalize findings from the…

Q: The p-value for this hypothesis test is = 0.000. Make your decision to reject the null hypothesis or…

A: Test is that whether our grading guidelines match up with what is actually happening. It is given…

Q: sing the COVID-19 worry data and political party data that you wrote about above, go ahead and…

A: The data on Number of times worry per day is represented by :    Clinton Voters Trump Voters…

Q: A botanist believes that pumpkin patches must be treated with a fungicide on average 8 about whether…

A: From the given information   It is clear that this is left tailed since fewer treatment is used

Q: Use the following scenario to conduct a hypothesis test.  You will again go through the different…

A: Givensample size(n)=682x=364significance level(α)=0.05

Q: Perform a Hypothesis Test using the P-value. a) Identify the claim and state the null hypothesis and…

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Q: Use the results from a survey of a simple random sample of 1108 adults. Among the 1108 ​respondents,…

A: Givensample size(n)=1108sample proportion(p^)=84%claim is that 34 of adults rate themselves as above…

Q: Use the results from a survey of a simple random sample of 1095 adults. Among the 1095 ​respondents,…

A: Use the results from a survey of a simple random sample of 1095 adults. Among the 1095 ​respondents,…

Q: SAccording to Inc.com, 79% of job seekers used social media in their job search in 2018. Many…

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Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. The principal introduces a…

A: At one school, the average amount of time that tenth-graders spend watching television each week is…

Q: You have just analyzed the results from your experiment, and you calculated p = .13. What…

A: It is given that the p-value=0.13. Consider the level of significance is as 0.05.

Q: he five-step method. A researcher wants to compare Natural Sciences students and Liberal Arts…

A: Let X1 be the random variable such that number of  books read by Natural Sciences students x̅1:…

Q: The Statistics Games are played by a large number of students across the county. Last year, 32% of…

A: Givensample size(n)=250p^=0.38

Q: In a class of 20 students, the instructor gave two exams, one take home exam and one live exam. She…

A: From the data: Let d¯ be the mean of the differences and sd be its standard deviation d¯=0sd=2.5955…

Q: Use the results from a survey of a simple random sample of 1090 adults. Among the 1090 ​respondents,…

A: Use the results from a survey of a simple random sample of 1090 adults. Among the 1090 ​respondents,…

Q: 4. Rosa reads an article in a magazine that says 37% of people talk to their pets on the answering…

A: It is given that  Sample size n = 150 Number of people talk that way, X = 51 Level of significance =…

Q: cextbook publisher claims that 75% of college students enrolled in a course that uses their ktbooks…

A: Solution: Given information: n= 111 Sample size of students  x= 92 students  used textbook  pass the…

Q: The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is $600…

A: Given: Claim of the manager is that the manager of the Danvers-Hilton Resort Hotel is $600 or less

Q: MED Drug Company designed a new drug to prevent colds. The company states that this drug is about…

A: Given : MED Drug Company designed a new drug to prevent colds The company states that this drug is…

Q: use a hypothesis test to determine if the proportions are statistically different. A recent survey…

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Q: Use the results from a survey of a simple random sample of 1030 adults. Among the 1030 ​respondents,…

A: Given data: Simple random sample of 1030 adults. ​67% rated themselves as above average drivers.…

Q: Last year, 54% of business owners gave a holiday gift to their employees. A survey of business…

A:

Q: ast year, 49% of business owners gave a holiday gift to their employees. A survey of business owners…

A: Given  49% of business owners gave holiday gift last year p= 0.49 38% planned to provide holiday…

Q: 3) Fill in the blank Using the p-value method, we reject the null hypothesis if the p-value is than…

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Q: Use the results from a survey of a simple random sample of 1120 adults. Among the 1120 ​respondents,…

A: simple random sample of 1120 adults ​67% rated themselves as above average drivers

Q: ast year, 41% of business owners gave a holiday gift to their employees. A survey of business owners…

A: It is given that n=50 and p-hat is 0.33.

Q: In the prior presidential election, the average voter turnout in Miami was 57%. You think this will…

A: Given a hypothesis test to check if the average voter turnout change in next presidential election,…

Q: The p-value for a hypothesis test turns out to be 0.03628. At a 9% level of significance, what is…

A: Decision rule : Reject H0 if P-value  <  α

Q: The local Hannaford is tracking mask compliance in their stores. In mid-March they found that only…

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Q: The personality trait of "Conscientiousness" (someone who is organized, responsible, and can control…

A: Given: The sample number of ARC students is n=9. The sample mean of Conscientiousness of ARC…

Q: Vhat are the two decisions that you can make from performing a hypothesis test? Vhat are the two…

A: Hypothesis is mainly done to check the claim that is made for the population parameter. There are…

Q: Last year, 41% of business owners gave a holiday gift to their employees. A survey of business…

A: The hypothesized proportion is 0.41.

Q: Food inspectors inspect samples of food products to see if they are safe. This can be thought of as…

A: as we already know that type I error is rejection of true null hypothesis, i.e. we reject the null…

Q: Are people who live in Omaha more likely to own a pet than people who live in Chicago? A survey of…

A: Given H0 : p1-p2=0 Ha : p1-p2>0 Assume Significance level=0.05

Q: A student majoring in Business who has passed the Business Math course suspects that the average…

A: The t test is used to compare the mean significance between the two sample of size less than 30 or…

Q: level of significance for a hypothesis test is 0.01. If you compute a P-value of 0.0157, what…

A: In statistical hypothesis testing, our decision is either to reject the null hypothesis or fail to…

Q: Bjork Larsen was trying to decide whether to use a new racing wax for cross-country skis. He decided…

A: State the hypotheses. That is, there is no evidence to conclude that average could be less than 55…

Q: 2. A recent report on elementary schools in Kent county claimed that 13% of elementary students…

A: Given Information: Claim: 13% of elementary students typically walk to school. Sample size n=80 Out…

Q: Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics…

A: From the provided information, Sample size (n) = 64 From which 34 feel more enriched as a result of…

Q: Conduct the hypothesis test and provide the test statistic, critical value, and/or P-value, and…

A: Four students who skipped a test gave an excuse as a flat tire. In one of the tests, the author…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.