On the Navajo Reservation, a random sample of 222 permanent dwellings in the Fort Defiance region showed that 56 were traditional Navajo hogans. In the Indian Wells region, a random sample of 141 permanent dwellings showed that 17 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. Find a 90% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit       upper limit

On the Navajo Reservation, a random sample of 218 permanent dwellings in the Fort Defiance region showed that 56 were traditional Navajo hogans. In the Indian Wells region, a random sample of 145 permanent dwellings showed that 21 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 99% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit       upper limit   Examine the confidence interval and comment on its meaning. Does it include numbers that are all positive? all negative? mixed? What if it is hypothesized that Navajo who follow the traditional culture of their people tend to occupy hogans? Comment on the confidence interval for p1 − p2 in this context.

A sample of 153 was selected from a large population. 69% of the sample had a characteristic of interest. Calculate a 99% confidence interval estimate for the proportion of the population with the characteristic.

On the Navajo Reservation, a random sample of 228 permanent dwellings in the Fort Defiance region showed that 68 were traditional Navajo hogans. In the Indian Wells region, a random sample of 151 permanent dwellings showed that 25 were traditional hogans. Let p₁ be the population proportion of all traditional hogans in the Fort Defiance region, and let pa be the population proportion all traditional hogans in the Indian Wells region. USE SALT (a) Find a 99% confidence interval for p₁ - P₂. (Use 3 decimal places.) lower limit upper limit (b) Examine the confidence interval and comment on its meaning. Does it include numbers that are all positive? I negative? mixed? What if it is hypothesized that Navajo who follow the traditional culture of their people tend to occupy hogans? Comment on the confidence interval for P₁ P₂ in this context. O Because the interval contains only positive numbers, we can say that there is a higher proportion of hogans in the Fort Defiance region. O Because the…

A simple random sample of size n=350 individuals who are currently employed is asked if they work at home at least once per week. Of the 350 employed individuals​ surveyed, 42 responded that they did work at home at least once per week. Construct a​ 99% confidence interval for the population proportion of employed individuals who work at home at least once per week.

A sample of 164 was selected from a large population. 66% of the sample had a characteristic of interest. Calculate a 90% confidence interval estimate for the proportion of the population with the characteristic.

On the Navajo Reservation, a random sample of 220 permanent dwellings in the Fort Defiance region showed that 68 were traditional Navajo hogans. In the Indian Wells region, a random sample of 137 permanent dwellings showed that 21 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region.   (a) Find a 99% confidence interval for p1 – p2. (Use 3 decimal places.)lower limit =upper limit=

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A certain article indicates that in a sample of 1,000 dog owners, 690 said that they take more pictures of their dog than of their significant others or friends, and 490 said that they are more likely to complain to their dog than to a friend. Suppose that it is reasonable to consider this sample as representative of the population of dog owners. Construct a 95% confidence interval for the proportion of dog owners who are more likely to complain to their dog than to a friend. (Use a table or technology. Round your answers to three decimal places.)