Hi Can you answer the wrong problems 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 (inminutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 8820 observations, the sample mean interval was x, = 62.2 minutes. Let x, be a random variable that representsthe time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 25,340 observations, the sample mean time interval was x = 72.4 minutes. Historical datasuggest that o, = 9.47 minutes and oz = 11.71 minutes. Let 4z be the population mean of x, and let az be the population mean of x2.(a) Compute a 95% confidence interval for 4, - 42. (Use 2 decimal places.)10.04-10.279lower limitupper limit(b) Comment on the meaning of the confidence interval in the context of this problem. Does the interval consist of positive numbers only? negative numbers only? a mix of positive andnegative numbers? Does it appear (at the 95% confidence level) that a change in the interval length between eruptions has occurred? Many geologic experts believe that the distribution oferuption times of Old Faithful changed after the major earthquake that occurred in 1959.Because the interval contains only positive numbers, we can say that the interval length between eruptions has gotten shorter.O Because the interval contains both positive and negative numbers, we can not say that the interval length between eruptions has gotten longer.We can not make any conclusions using this confidence interval.Because the interval contains only negative numbers, we can say that the interval length between eruptions has gotten longer.Need Help?Read ItWatch it

Name: Hi Can you answer the wrong problems The U.S. Geological Survey compil
Uploaded: 2024-03-20T06:38:44.000Z
Channel: Bartleby
Description: Hi Can you answer the wrong problems 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 (inminutes) between Old Fa