Question

In: Statistics and Probability

3. Take the mean and standard deviation of data set A calculated in problem 1 and...

3. Take the mean and standard deviation of data set A calculated in problem 1 and assume that they are population parameters (μ and σ) known for the variable fish length in a population of rainbow trouts in the Coldwater River. Imagine that data set B is a sample obtained from a different population in Red River (Chapter 6 problem!).

a) Conduct a hypothesis test to see if the mean fish length in the Red River population is different from the population in Coldwater River.

b) Conduct a hypothesis test to see if the variance in fish length is different in the Red River population compared to the variance in the Coldwater population.

please explain to me how to do this step by step. thank you!

Solutions

Expert Solution


Related Solutions

3. Take the mean and standard deviation of data set A calculated in problem 1 and...
3. Take the mean and standard deviation of data set A calculated in problem 1 and assume that they are population parameters (μ and σ) known for the variable fish length in a population of rainbow trouts in the Coldwater River. Imagine that data set B is a sample obtained from a different population in Red River (Chapter 6 problem!). Conduct a hypothesis test to see if the mean fish length in the Red River population is different from the...
Take the mean and standard deviation of data set A calculated in problem 1 and assume...
Take the mean and standard deviation of data set A calculated in problem 1 and assume that they are population parameters (μ and σ) known for the variable fish length in a population of rainbow trouts in the Coldwater River. Imagine that data set B is a sample obtained from a different population in Red River (Chapter 6 problem!). Conduct a hypothesis test to see if the mean fish length in the Red River population is different from the population...
Suppose you calculated the mean, median, mode, and sample standard deviation of a data set. The...
Suppose you calculated the mean, median, mode, and sample standard deviation of a data set. The results are shown below. Mean: 44 Median: 31 Mode: 46 Sample Standard Deviation: 2 If each number in the data set was decreased by 4 units, what would be the new values of these statistics? Fill in your results below. New Mean: New Median: New Mode: New Sample Standard Deviation:
the mean of the data set: 37634.3 the standard deviation of the data set: 10967.85287 the...
the mean of the data set: 37634.3 the standard deviation of the data set: 10967.85287 the sample size of the data set: 50 Using the numbers above calculate the following Show your step-by-step work for each question: Determine the 90% confidence interval, assuming that sigma is unknown, list each in proper (lower bound, upper bound) notation. Make a confidence statement. Determine the 95% confidence interval, assuming that sigma is unknown, list each in proper (lower bound, upper bound) notation. Make...
Find the mean, median, mode, and standard deviation of the following set of data: 2, 3,...
Find the mean, median, mode, and standard deviation of the following set of data: 2, 3, 3, 4, 5, 6, 9 Mean_____________________ Median____________________ Mode_____________________ Standard Deviation__________ You roll two fair dice, a green one and a red one. Find the probability of getting a sum of 6 or a sum of 4. ___________________ You draw two cards from a standard deck of 52 cards without replacing the first one before drawing the second. Find the probability of drawing an ace...
A set of data is normally distributed with a mean of 37 and a standard deviation...
A set of data is normally distributed with a mean of 37 and a standard deviation of 1.5. If you randomly select a data point and it is 37.75, which of the following would describe that data point? Unusually large (Statistically significant) Unusually small (Statistically significant) Not unusual (Not statistically significant) Not enough information
Find the standard deviation for a set of data that has a mean of 100 and...
Find the standard deviation for a set of data that has a mean of 100 and 95% of the data falls between 70 and 130. ** Please show me the procedure, thanks!!!
The standard deviation for a set of stock returns can be calculated as the: A. positive...
The standard deviation for a set of stock returns can be calculated as the: A. positive square root of the average return B. average squared difference between the actual and the average return C. positive square root of the variance D. variance squared  
A statistical practitioner determined that the mean and standard deviation of a data set which is...
A statistical practitioner determined that the mean and standard deviation of a data set which is symmetrical and normal (bell-shaped) were 120 and 10, respectively. What can you say about the proportions of observations that lie between each of the following intervals? a.   90 and 150 b. 100 and 140 c. 110 and 150
A data set has a mean of 700 and a standard deviation of 40. a. Using...
A data set has a mean of 700 and a standard deviation of 40. a. Using Chebyshev's theorem, what percentage of the observations fall between 540 and 860? b. Using Chebyshev’s theorem, what percentage of the observations fall between 500 and 900?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT