a. Two samples are taken with the following numbers of successes and sample sizes r1r1 = 38 r2r2 = 29 n1n1 = 57 n2n2 = 83 Find a 91% confidence interval, round answers to the nearest thousandth.

a. Two samples are taken with the following numbers of successes and sample sizes
r1r1 = 38 r2r2 = 29
n1n1 = 57 n2n2 = 83


Find a 91% confidence interval, round answers to the nearest thousandth.
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B.  A random sample of n1n1  = 208 people who live in a city were selected and 100 identified as a "dog person." A random sample of n2n2  = 106 people who live in a rural area were selected and 52 identified as a "dog person." Find the 98% 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.

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c.  If the confidence interval for the difference in population proportions p1−p2 includes 0, then this suggests which of the following?