In 2010, the National Football league adopted new rules designed to limit head injuries. In a survey conducted in 2015 by the Harris Poll, 1216 of 2096 adults indicated that they were football fans and followed professional football. Of these football fans, 692 said they thought that the new rules were effective in limiting head injuries. Assuming that the sample is representative of adults in the United States, construct a 99% confidence interval for the proportion of U.S. adults who consider themselves to be football fans. USE either EMC^3 or  HMC^3 Estimation or Hypotheses:     Method:   Conditions:       Calculations:     Communicate Results

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A: Solution

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A: Point estimate=0.81

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A: Given claim: 50% of the parents who had children in grades K-12 were satisfied with the quality of…

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A: Given Data: x=722 n=1762   p^=7221762=0.4098

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A: Given n=832 P=0.46

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A: Given :  n = 3005 p̂=0.817

Q: In a random sample of 100 customers, the items that customers purchased were tracked. It was found…

A: Given,sample size(n)=100sample proportion(p^)=0.171-p^=1-0.17=0.83α=1-0.90=0.1α2=0.05Z0.05=1.645

Q: According to a Harris Interactive survey of 2401 adults conducted in April 2009, 25% of adults do…

A:

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A: Given : Random sample of 142 graduate-admissions personnel Sample size (n)=142 Let X : No. of…

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A: The formula for computing confidence interval is,  n is the sample size and P is the proportion.

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A: (a)   Obtain the 96% confidence interval to estimate the true proportion of all U. S. adults who…

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A:

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A: The value of z at 98% confidnce level is 2.326, which can be obtained by using the standard normal…

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A:

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A:

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A:

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A:

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Q: Several years ago, 39% of parents who had children in grades K-12 were satisfied with the quality of…

A:

Q: In a survey of 3116 adults aged 57 through 85​ years, it was found that 86.2​% of them used at least…

A:

Q: In a study of the relationship between alcohol use and bicycling fatalities, the researcher…

A:

Q: A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a…

A: Confidence Interval: In statistics, we can say a range of values of the specified population…

Q: A newspaper article stated that the US Supreme Court received 812 letters from around the country on…

A: To find the 95% confidence interval for the true proportion of all American adults who feel that…