A poll is taken in which 335 out of 600 randomly selected voters indicated their preference for a certain candidate. (a) Find a 99% confidence interval for p.  ≤p≤  (b) Find the margin of error for this 99% confidence interval for p.

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A statistics professor at a major university asked her students whether or not they wereregistered to vote. In a sample of 50 of the randomly sampled statistics students (from over1000 students), 35 said they were registered to vote. Find a 98% confidence interval and makea conclusion based upon those results.

Most married couples have two or three personality preferences in common. A random sample of 370 married couples found that 130 had three preferences in common. Another random sample of 572 couples showed that 234 had two personality preferences in common. Let p1 be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common.   (a) Find a 99% confidence interval for p1 – p2. (Use 3 decimal places.) lower limit   upper limit

Suppose that x = 11 observations possess the characteristic of interest from n = - 32 observations. Let p be the population proportion possessing the characteristic. (a) Compute a two-sided 99% confidence interval for p. (b) Compute a two-sided 95% confidence interval for p.

A poll is taken in which 307 out of 575 randomly selected voters indicated their preference for a certain candidate. (a) Find a 95% confidence interval for pp. ≤p≤≤p≤ (b) Find the margin of error for this 95% confidence interval for pp.

A random sample of n - 236 people who live in a city were selected and 81 identified as a "dog person." A random sample of n2 - 109 people who live in a rural area were selected and 60 identified as a "dog person." Find the 90% confidence interval for the difference in the proportion of people that live in a city who identify as a "dog person" and the proportion of people that live in a rural area who identify as a "dog person." Round answers to to 4 decimal places. P1 - P2 Question Help: Message instructor Submit Question Jump to Answer

a random sample of 56 credit card holders show that 41 regularly paid their credit card bill on time, let p represent the population of all the people who regularly pay their credit card bill on time. find a point estimate for p. find a 95% confidence interval for p.

A random sample of 388 married couples found that 280 had two or more personality preferences in common. In another random sample of 574 married couples, it was found that only 20 had no preferences in common. Let p1 be the population proportion of all married couples who have two or more personality preferences in common. Let p2 be the population proportion of all married couples who have no personality preferences in common.   (a) Find a 90% confidence interval for p1 – p2. (Use 3 decimal places.) lower limit       upper limit

After a college's football team once again lost a football game to the college's arch rival, the alumni association conducted a survey to see if alumni were in favor of firing the coach. An SRS of 100 alumni from the population of all living alumni was selected. Sixty-four of the alumni in the sample were in favor of firing the coach. Let p the true proportion of all living alumni who favor firing the coach. Which of the following gives the correct 99% confidence interyal for p? 0.64 t 0.079 O 0.64 t 0.048 0.64 0.009 O 0.64 ± 0.124 O 0.64 t 0.094