Question

In: Statistics and Probability

Identify a random variable for which data most be collected over time and you think the...

Identify a random variable for which data most be collected over time and you think the passage of time may influence the behavior tor of the random variable. Collect at least 30 observations on this random variable. Construct a time-series plot (or paste the plot created from Minicab). This section should include the definition of the random variable, why you think time may influence the data. how where you collected the data. the time-series plot. and meaningful commentary on the plot. It should not include your data.

Solutions

Expert Solution

The time series is about electricity production from oil globally over the years from 1971 to 2015.


Related Solutions

Data was collected on annual personal time (in hours) taken by a random selection of 50...
Data was collected on annual personal time (in hours) taken by a random selection of 50 women and 55 men employed by a medium-sized company. We know that the data for women and men is normally distributed. The Human Resources Department believes that the amount of personal time used by women is less than the amount of personal time used by men. The sample of women took an average of 25 hours of personal time with a standard deviation of...
Think about the data collected and used by Netflix. A) Identify three tables that would contain...
Think about the data collected and used by Netflix. A) Identify three tables that would contain customer or subscription data. B) For each table identified in a list five attributes (you may include primary and foreign keys as well as non-key attributes) C) Describe each attribute using elements from data dictionary (e.g. descriptions, field length, field type, etc.) D) Why would Netflix be interested in storing and tracking these attributes (e.g. to enhance customer service or future customer sales, to...
Based on data that was collected over the past several months, the average time between arrivals...
Based on data that was collected over the past several months, the average time between arrivals to the Emergency Room on a Monday between the hours of 7am to 7pm is 35min. Emergencies occur at random, and hence the arrival of patients to the Emergency Room follows a purely random process. What probability distribution would you use to model the time between patient arrivals? Suppose a patient just arrived, what is the probability the next patient will arrive in less...
#5.Which experiment that we did do you think was the most prone to random error, and...
#5.Which experiment that we did do you think was the most prone to random error, and which do you think was most prone to systematic error? Why was that the case for those experiments?
Data collected over a long period of time showed that 1 in 1000 high school students...
Data collected over a long period of time showed that 1 in 1000 high school students like mathematics. A random sample of 30,000 high school students was surveyed. Let X be the number of students in the sample who like mathematics a) What is the probability distribution of X? b) What distribution can be used to approximate the distribution of X? Explain. c) Find the approximate probability of observing a value of X equal to 40 or more? d) Find...
Data collected over a long period of time showed that 1 in 1000 high school students...
Data collected over a long period of time showed that 1 in 1000 high school students like mathematics. A random sample of 30,000 high school students was surveyed. Let X be the number of students in the sample who like mathematics a) What is the probability distribution of X? b) What distribution can be used to approximate the distribution of X? Explain. c) Find the approximate probability of observing a value of X equal to 40 or more? d) Find...
The following data was collected from a random sample of Metropolis citizens: Most Hated Villain Joker...
The following data was collected from a random sample of Metropolis citizens: Most Hated Villain Joker Catwoman Doomsday Lex Luthor Other Wonder Woman 22 36 25 20 26 Favorite Superman 13 15 34 35 21 Hero Batman 33 36 15 15 25 Other 16 14 12 20 20 Using a 'Test for Independence', decide at the 5% significance level if there is sufficient evidence of there being an association between 'Favorite Hero' and 'Most Hated Villain'. Be sure to show...
Let the random variable X denote the time (hours) for which a part is waiting for...
Let the random variable X denote the time (hours) for which a part is waiting for the beginning of the inspection process since its arrival at the inspection station, and let Y denote the time (hours) until the inspection process is completed since its arrival at the inspection station. Since both X and Y measure the time since the arrival of the part at the inspection station, always X < Y is true. The joint probability density function for X...
The number of faults over a period of time was collected for a sample of 100...
The number of faults over a period of time was collected for a sample of 100 data transmission lines. We want to test if the data come from a Poisson distribution. number of faults 0 1 2 3 4 5 >5 number of lines 38 30 16 9 5 2 0 (a) Assuming the number of faults for a data-transmission line, Yi , i = 1, . . . , 100, follows a Poisson distribution with parameter λ, find the...
QUESTION The table below shows data collected over a two-hundred-year time span in a woodland area....
QUESTION The table below shows data collected over a two-hundred-year time span in a woodland area. Each year, the number of new invasive species that appeared for the very first time in that woodland was recorded. Do new invasive species appear in random years, or non-random years? If they appear randomly, the data should follow a Poisson distribution. Calculate the mean number of new invasive species per year Test whether the data fit a Poisson distribution, making sure the data...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT