Race and smoking 2010 Data collected in 2010 by theBehavioral Risk Factor Surveillance System revealedthat in the state of New Jersey, 15.7% of whites and15.9% of blacks were cigarette smokers. Suppose theseproportions were based on samples of 2449 whites and464 blacks.a) Create a 90% confidence interval for the difference inthe percentage of smokers between black and whiteadults in New Jersey.b) Does this survey indicate a race-based difference insmoking among New Jersey adults? Explain, using yourconfidence interval to test an appropriate hypothesis.c) What alpha level did your test use?

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Q: 25.1, 22.3, 21.8, 17.1, 19.4, 29.2, 21.4, 26.5, 16.7, 19.4, 20.5 Construct a 90% confidence interval…

A: From the provided information, Sample size (n) = 11 Confidence level = 90%

Q: knowing

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A:

Q: Find a 95% confidence interval for the proportion of all U.S. adults with household incomes of at…

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Q: In a survey of 3115 adults aged 57 through 85​ years, it was found that 86.1​% of them used at…

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Q: In a survey of 700 random households in a particular city in NCR, adults have been 2) asked if they…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Exhibit 9-22 The manager of a grocery store has taken a random sample of 36 customers. The average…

A:

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A: To find the confidence level of 95%.

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A:

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A: M1=$3900M2=$3300n1=400n2=450σ1=$880σ2=$810

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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.