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6. [10.27 Points] DETAILS BBUNDERSTAT12 7.4.0185. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Most married couples have two or three personality preferences in common. A random sample of 380 married couples found that 138 had three preferences in common. Another random sample of 578 couples showed that 206 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. l USE SALT (a) Find a 99% condence interval for ,o1 - p2. [Use 3 decimal places.) lowerlimit upper limit (b) Examine the condence interval in part (a) and explain what it means in the context of this problem. Does the condence interval contain all positive. all negative, or both positive and negative numbers? What does this tell you about the proportion of married couples with three personality preferences in common compared with the proportion of couples with two preferences in common (at the 99% confidence level]? 0 Because the interval contains only positive numbers, we can say that a higher proportion of married couples have three personality preferences in common. 0 Because the interval contains both positive and negative numbers. we can not sayr that a higher proportion of married couples have three personality preferences in common. 0 We can not make any conclusions using this condence interval. 0 Because the interval contains only negative numbers, we can say that a higher proportion of married couples have two personality preferences in common. Need Help