The sample survey showed that 67% of internet users said the internet has generally strengthened their relationship with family and friends. Develop a 95% confidence interval for the proportion of respondents who say the internet has strengthened their relationship with family and friends. (Round your answers to four decimal places.)

The 95% confidence interval for the proportion of respondents who say the internet has strengthened their relationship with family and friends is , in which n is the size of the sample.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

In which

z is the z-score that has a p-value of .

67% of internet users said the internet has generally strengthened their relationship with family and friends.

This means that

95% confidence level

So , z is the value of Z that has a p-value of , so .

The lower limit of this interval is:

The upper limit of this interval is:

The 95% confidence interval for the proportion of respondents who say the internet has strengthened their relationship with family and friends is , in which n is the size of the sample.

answer:  

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step-by-step explanation: easy