A survey asked, "How many tattoos do you currently have on your body?" Of the males surveyed, responded that they had at least one tattoo. Of the females surveyed, responded that they had at least one tattoo. Construct a % confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval.

Complete Question

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The  95% interval for is  

Option A is correct

Step-by-step explanation:

From the question we are told that

   The sample size of male  is

    The number of males that  said they have at least one tattoo is

   The sample size of female is

     The number of females that  said they have at least one tattoo is

Generally the sample proportion of male is  

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Generally the sample proportion of female is  

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Given that the confidence level is  95% then the level of  significance is mathematically represented as

Next we obtain the critical value of from the normal distribution table , the value is

Generally the margin of error is mathematically represented as

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The 95% confidence interval is mathematically represented as

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So the interpretation is that there is 95% confidence that the difference of the proportion is in the interval .So conclude that there is insufficient evidence of a significant difference in the proportion of male and female that have at least one tattoo

This because the difference in proportion is less than

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

i dont understand the question? ?

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