Unitek College | Student Portal X Links x MATH205 - Chapter 7 Test X MA MATH205 - Chapter 7 Test - G x
Question

please help with this

attachment 09252019

Image transcriptions

Unitek College | Student Portal X Links x MATH205 - Chapter 7 Test X MA MATH205 - Chapter 7 Test - G x webassign.net/web/Student/Assignment-Responses/submit?dep=22146485&tags=autosave YouTube Maps Paused (s) A random sample of 374 married couples found that 300 had two or more personality preferences in common. In another random sample of 580 married couples, it was found that only 22 had no preferences in common. Let p, be the population proportion of all married couples who have two or more personality preferences in common. Let p, be the population proportion of all married couples who have no personality preferences in common. (a) Find a 99% confidence interval for , - P2. (Use 3 decimal places.) lower limit upper limit 580. (b) Explain the meaning of the confidence interval in part (a) in the context of this problem. Does the confidence interval contain all positive, all negative, or both positive and negative numbers? What does this tell you ( at the 99% confidence level) about the proportion of married couples with two or more personality preferences in common compared with the proportion of married couples sharing no personality preferences in common? Because the interval contains both positive and negative numbers, we can not say that a higher proportion of married couples have two or more .png personality preferences in common. Because the interval contains only negative numbers, we can say that a higher proportion of married couples have no personality preferences in common . Because the interval contains only positive numbers, we can say that a higher proportion of married couples have two or more personality preferences in common. We can not make any conclusions using this confidence interval. 12. + -/4.51 points BBUnderStat12 7.4.019. My Notes + Ask Your Teacher The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x, be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9720 observations, the sample mean interval was x, = 62.4 minutes. Let x, be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 23 819 observations, the sample mean time interval was x. = 69.8 minutes. Historical data suggest that o. = 9.47 minutes and 0. = 11.57 minutes. Let y, be communication Apprehension MacBook Air F10 4) F11 F12

Get unstuck

441,462 students got unstuck by Course
Hero in the last week

step by step solutions

Our Expert Tutors provide step by step solutions to help you excel in your courses