statistics quiz 1369271 2

deadlineassignments.com

Part 1 of 8 –

Question 1 of 17

1.0 Points

An investor wants to compare the risks associated with two different stocks. One way to measure the risk of a given stock is to measure the variation in the stock’s daily price changes.

In an effort to test the claim that the variance in the daily stock price changes for stock 1 is different from the variance in the daily stock price changes for stock 2, the investor obtains a random sample of 21 daily price changes for stock 1 and 21 daily price changes for stock 2.

The summary statistics associated with these samples are: n
₁ = 21, s
₁ = .725, n
₂ = 21, s
₂ = .529.

If you compute the test value by placing the larger variance in the numerator, at the .05 level of significance, would you conclude that the risks associated with these two stocks are different?

Reset Selection

Question 2 of 17

1.0 Points

Serum ferritin is used in diagnosing iron deficiency. In a study conducted recently researchers discovered that in a sample of 28 elderly men the sample standard deviation of serum ferritin was 52.6 mg/L. For 26 younger men the sample standard deviation was 84.2 mg/L. At the .01 level of significance, do these data support the conclusion that the ferritin distribution in elderly men has a smaller variance than in younger men?

Reset Selection

Question 3 of 17

1.0 Points

Multiple myeloma or blood plasma cancer is characterized by increased blood vessel formulation in the bone marrow that is a prognostic factor in survival. One treatment approach used for multiple myeloma is stem cell transplantation with the patient’s own stem cells. The following data represent the bone marrow microvessel density for a sample of 7 patients who had a complete response to a stem cell transplant as measured by blood and urine tests. Two measurements were taken: the first immediately prior to the stem cell transplant, and the second at the time of the complete response.

Patient	1	2	3	4	5	6	7
Before	158	189	202	353	416	426	441
After	284	214	101	227	290	176	290

At the .01 level of significance, is there sufficient evidence to conclude that the mean bone marrow microvessel density is higher before the stem cell transplant than after the stem cell transplant?

Reset Selection

Part 2 of 8 –

Question 4 of 17

1.0 Points

The standard error of the estimate, s
_est, is essentially the

Reset Selection

Question 5 of 17

1.0 Points

The correlation value ranges from

Reset Selection

Question 6 of 17

1.0 Points

Outliers are observations that

Reset Selection

Question 7 of 17

1.0 Points

A correlation value of zero indicates.

Reset Selection

Question 8 of 17

1.0 Points

Correlation is a summary measure that indicates:

Reset Selection

Part 3 of 8 –

Question 9 of 17

2.0 Points

Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation).
NOTE: For scientific notation, a period MUST be used as the decimal point marker.

Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values.

For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.

A business major wants to determine whether the variation in advertising costs of hair salons is different from the variation in advertising costs of nail salons. He surveys several businesses and finds the standard deviation in monthly advertising costs is $23 for 12 hair salons, and $43 for 8 nail salons.

What is the test value for this hypothesis test?

Test value:

Reset Selection

Order a similar paper and get 15% discount. Use the coupon code GILB

“Hello, I deliver nursing papers on time following instructions from the client. My primary goal is customer satisfaction. Welcome for plagiarism free papers”

Hi! I am an English Language and Literature graduate; I have written many academic essays, including argumentative essays, research papers, and literary analysis.

"Hi, count on me to deliver quality papers that meet your expectations. I write well researched papers in the fields of nursing and medicine".

"A top writer with proven reliability and experience. I have a 99% success rate, overall rating of 10. Hire me for quality custom written nursing papers. Thank you"

How Our Essay Writing Service Works

Tell Us Your Requirements

Fill out order details and instructions, then upload any files or additional materials if needed. Then, confirm your order by clicking “Place an Order.”

Make your payment

Your payment is processed by a secure system. We accept Mastercard, Visa, Amex, and Discover. We don’t share any informati.on with third parties

The Writing Process

You can communicate with your writer. Clarify or track order with our customer support team. Upload all the necessary files for the writer to use.

Download your paper

Check your paper on your client profile. If it meets your requirements, approve and download. If any changes are needed, request a revision to be done.

Stay In Touch!

Leave your email and get discount promo codes and the best essay samples from our writers!

statistics quiz 1369271 2

deadlineassignments.com

Question 1 of 17

Question 2 of 17

Question 3 of 17

Question 4 of 17

Question 5 of 17

Question 6 of 17

Question 7 of 17

Question 8 of 17

Question 9 of 17

Order a similar paper and get 15% discount. Use the coupon code GILB

How Our Essay Writing Service Works

Tell Us Your Requirements

Make your payment

The Writing Process

Download your paper

Recent Questions

Part 5 capstone

Part 4 capstone project

Unit 4 dp – outline

Capstone part 3- unit 3 ip

Uni3 dp

Unit 2 dp

Stay In Touch!

Follow Us

Company

Resources

Terms

Language

We accept

Services