Review problem on telephone service

Assignment Help Basic Statistics

Reference no: EM131813477

Question: A survey of 21,250 households concerning telephone service gave the results shown in the table.

a. Give a point estimate for the proportion of all households in which there is a cell phone but no landline.

b. Assuming the sample is sufficiently large, construct a 99.9% confidence interval for the proportion of all households in which there is a cell phone but no landline.

c. Give a point estimate for the proportion of all households in which there is no telephone service of either kind.

d. Assuming the sample is sufficiently large, construct a 99.9% confidence interval for the proportion of all all households in which there is no telephone service of either kind.

Reference no: EM131813477

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