It is estimated that Old Faithful geyser in Yellowstone National Park erupts every 90 minutes. One...
It is estimated that Old Faithful geyser in Yellowstone National Park erupts every 90 minutes. One day was selected at random and the times of Old Faithful’s eruptions were recorded. The number of minutes between eruptions is recorded below. Can you conclude that the mean time between eruptions differs from 90 minutes?
The number of minutes between eruptions are: 93, 94, 91, 88, 99, 89, 94, 96, 76, 109, 94, 96, 91, 98, 96
What is the test value? Round to 2 decimal places.
Homework Answers
The statistical software output for this problem is:
Hence,
Test value = 2.00
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It is estimated that Old Faithful geyser in Yellowstone National
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8. You and several friends visit the Old Faithful geyser in Yellowstone National Park. You record...
8. You and several friends visit the Old Faithful geyser in Yellowstone National Park. You record the interval times between eruptions in minutes. You get the following data. 81 81 86 87 89 92 93 94 95 96 97 98 98 10 10 106 a. How many interval times were recorded? b. What is the mean interval time? Round your answer to two decimal places. c. What is the median interval time? d. Identify the 5-number summary for this data....
The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870...
The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x1 be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9160 observations, the sample mean interval was x1 = 62.8 minutes. Let x2 be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 25,457...
3. The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from...
3. The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x1 be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9,800 observations, the sample mean interval was 62.6 minutes. Let x2 be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 24,404 observations,...
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10.62 Case Study Is Old Faithful becoming less faithfuli One of the most popular natural attractions in the United States is the Old faithful geyser in Yellowstone his geyser was named for its predictable time intervals between eruptions, but is Old Faithful changing? The table lists time intervals in minutes) The four National Park. T tween eruptions for four different years. samples have means of 63.3 min, 74.3 min, 81.7 min, and 83.8 min, respectively, so i appears that the...
The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870...
The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x1 be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9780 observations, the sample mean interval was x1 = 63.4 minutes. Let x2 be a random variable that represents the time interval in minutes between Old Faithful eruptions for the years 1983 to 1987. Based on 23,585...
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The following are 30 time lapses in minutes between eruptions of Old Faithful geyser in Yellowstone National Park, recorded between the hours of 8 a.m. and 10 p.m. on a certain day, and measured from the beginning of one eruption to the beginning of the next: 68, 63, 66, 63, 61, 44, 60, 62, 71, 62, 62, 55, 62, 67, 73, 72, 55, 67, 68, 65, 60, 61, 71, 60, 68, 67, 72, 69, 65, 66 A researcher wants to...
Old Faithful geyser in Yellowstone Park shoots water hourly to a height of 49.2 m. With...
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5. The data below represent duration times in seconds) of eruptions and time intervals (in minutes)...
5. The data below represent duration times in seconds) of eruptions and time intervals (in minutes) to the next eruption for randomly selected eruptions of the Old Faithful geyser in Yellowstone National Park. Duration 242 255 227 251 262 207140 Interval After 91 81 91 92 102 94 91 a. Find the regression equation. b. Construct a residual plot for the data. Use the table below to guide you. y-9 Point on Plot Y c. Is a linear model appropriate...
The table below shows a sample waiting time between eruptions and the duration of the eruption...
The table below shows a sample waiting time between eruptions and the duration of the eruption of the old faithful geyser in Yellowstone National Park, Wyoming , USA Eruption 270 230 272 121 130 288 102 276 Waiting 81 74 82 60 52 76 59 88 1. compute the correlation and give an interpretation. 2 Use the least -squares regression line to predict the waiting times for the eruption lasting 222 seconds.
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THERES FIVE PARTS REMAINING. please answer them if you know
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8.1.22-1 The most famous geyser in the world, Old Faithful in Yellowstone National Park, has a mean time between eruptions of 85 minutes. If the Interval of time between the eruptions is normally distributed with standard deviation 21.25 minutes, complete parts (a) through (1) (a) What is the probability that a randomly selected time interval between eruptions is longer than 96 minutes?...
8. You and several friends visit the Old Faithful geyser in Yellowstone National Park. You record the interval times between eruptions in minutes. You get the following data. 81 81 86 87 89 92 93 94 95 96 97 98 98 10 10 106 a. How many interval times were recorded? b. What is the mean interval time? Round your answer to two decimal places. c. What is the median interval time? d. Identify the 5-number summary for this data....
10.62 Case Study Is Old Faithful becoming less faithfuli One of the most popular natural attractions in the United States is the Old faithful geyser in Yellowstone his geyser was named for its predictable time intervals between eruptions, but is Old Faithful changing? The table lists time intervals in minutes) The four National Park. T tween eruptions for four different years. samples have means of 63.3 min, 74.3 min, 81.7 min, and 83.8 min, respectively, so i appears that the...
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THERES FIVE PARTS REMAINING. please answer them if you know
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