A random sample from a normal population yields the following 25 values: (a) Calculate an unbiased estimate

Question:

A random sample from a normal population yields the following 25 values:

(a) Calculate an unbiased estimate Ïƒ2 of the population variance.
(b) Give approximate 99% confidence interval for the population variance.
(c) Interpret your results and state any assumptions you made in order to solve the problem.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Mathematical Statistics With Applications In R

ISBN: 9780124171138

2nd Edition

Authors: Chris P. Tsokos, K.M. Ramachandran

See More Books

Question Posted: Nov 23, 2015 03:52 AM

See More Questions

Suppose that a random sample from a normal population with the known variance Ï2 is to be used to test the null hypothesis µ = µ0 against the alternative hypothesis µ =...
A random sample of 20 observations gave the following summary statistics: xi = 234 and Xi2 = 3048. Assuming that the data may be looked upon as a random sample from a normal population, construct a...
A random sample of 25 observations gave the following summary statistics: Xi = 234 and X i 2 = 3048. Assuming that the data can be looked upon as a random sample from a normal population, construct...
Implement the queue data structure using arrays of size 10 with the following functions Enqueue () - add {2,3,4,5,6,7,8} to the queue Dequeue() - remove 2 elements isFull() - check if the queue is...
A certain brand of at white interior latex paint claims one-coat coverage of 400 square feet per gallon. The standard deviation is known to be 20. A sample of 16 gallons is tested. (a) At = .05 in a...
1. How would you describe Evelyn Gustafsons leadership style? What were its strengths and weaknesses? What were the sources of her influence? 2. How would you describe Erik Rasmussens leadership...
Predicting Flight Delays (Bootstrap Forest and Boosted Trees). We return to the flight delays data for this exercise, and fit both a bootstrap forest and a boosted tree to the data. Use scheduled...
The combined gas mileage of midsize cars varies with mean 24 miles per gallon (mpg) and a standard deviation of about 5.5 mpg. A particular rental car agency typically has 150 midsize cars in its...
China and India are the two most populous countries in the world, but they have taken very different approaches to population control. Students will gather population statistics for these two...
On 6/1/2010 Vandalay Industries began the process of constructing a new factory by purchasing land and the building sitting on the land for a total of $2,000,000. The fair value of the land at that...
Suppose we want to study contaminated fish in a river. It is important for the study to know the size of the variance 2 in the fish weights. The 25 samples of fish in the study produced the following...
It is known that some brands of peanut butter contain impurities within an acceptable level. A test conducted on randomly selected 12 jars of a certain brand of peanut butter resulted in the...
In Problems 9.52 and 9.53, suppose you are testing the null hypothesis H 0 : = 0.20 against the two-tail alternative hypothesis H 1 : = 0.20 and you choose the level of significance = 0.05. What...
Acknowledging that one size does not fit all applies to our contemporary workplace as it relates to the leadership style employed by organizational leaders. What complicates the need for an...
Use JavaScript to implement the Client-Side Encryption Tool Interface as shown in Figure 1. (2) Use a Crypto Library to implement AES-256 encryption on a secret message with a list of your accounts,...
Discuss whether the type of managed care you would choose for your clinic would change if you had to be a part of the same type of insurance. Explain your reasoning.
QUESTION 2 60 MARKS Required: Given the following THREE (3) classes (found on the Edstem platform) - IceCream, Milkshake, and Waffle: a) Log into the learning platform edstem.org; navigate to:...
1. Many coaches are banning players from communicating via Twitter. a) Why do you think coaches do this? b) Why do you think players send tweets that coaches deem inappropriate? (Look at the book...
Graph each inequality. 5x - 3y > 15
Compile data on consumption and expenditures for the following categories in 30 different countries: (1) food and beverages, (2) clothing and footwear, (3) housing and home operations, (4) household...
A manufacturer of precision measuring instruments claims that the standard deviation in the use of the instruments is at most 0.00002 millimeter. An analyst, who is unaware of the claim, uses the...
A biotechnology company produces a therapeutic drug whose concentration has a standard deviation of 4 grams per liter. A new method of producing this drug has been proposed, although some additional...
Consider the 40 observations collected on the number of nonconforming coil springs in production batches of size 50 given in Exercise 6-79. (a) Based on the description of the random variable and...
The highest WACC is 11%, the baseline WACC is 7.4% and lowest WACCS is 2.8%. To derive a WACC that better accounts for extreme scenarios, you decide to assign the following probability weights: High-...
Give 2 examples of the ff: Statutory law Regulatory law Common law Include the title of each example and explain why you chose these examples ( 1 to 2 sentences ) . Note: Write your reference ( s )
The Adams family includes a financially well-informed couple, both aged 36, and two children aged 4 and 6. The family is financially sound but suffered badly during the tech meltdown in 2000. The...

A random sample from a normal population yields the following 25 values: (a) Calculate an unbiased estimate

Question:

90 87 121 96 106 107 89 107 83 92 117 93 98 120 97 109 78 87 99 79 104 85 9 07 89

Step by Step Answer:

n 25 C 99 a b c 8 s x x 14844 n1 2 From the x table x 455585 an...View the full answer

Mathematical Statistics With Applications In R

Students also viewed these Statistics questions