• 100% Satisfaction Guarantee

RoberttheRocket, Teacher/tutor
Category: Homework
Satisfied Customers: 119
Experience:  A teacher since 1977 and web savvy.
19454
RoberttheRocket is online now

# Statistics

### Customer Question

According to the department of Agriculture, the average American consumed 20 lbs of cheese in 1985. In order to test if there has been a decrease in cheese consumption, a random sample of 25 people has been chosen and their mean cheese consumption last year was found to be 19.5 lbs with a standard deviation of 4lbs. Use l=.01 to test if the mean cheese consumption has decreased from the 1985 figure. This is a 3 part question. What does m represent? 1. The population mean consumption of cheese in 1985. 2. The sample mean consumption of cheese in 1985 3. The population mean consumption of chees last year 4. The sample mean consumption of cheese last year 5. The population standard deviation of cheese consumption last year.
Which of the following is the appropiate rejection regions?(TS=test statistic) 1. TS2.485 4. TS2.492 5. TS>2.326
Which of the following is the value of the test statistic? 1. -3.125 2. -0.125 3. 0.125 4. -0.625 5. 0.625

Submitted: 11 years ago.
Category: Homework
Expert:  RoberttheRocket replied 11 years ago.

What does m represent?  4. The sample mean consumption of cheese last year

u is the population mean and  m is the sample mean.

Which of the following is the appropiate rejection regions?(TS=test statistic)  5. TS>2.326

for l=.01, the rejection region for a one tailed test would be 2.326 or -2.326.

Which of the following is the value of the test statistic?          4. -0.625

z = m - u/(a/Vn)   Vn = square root of n

where m = 19.5, u = 20, a = 4, n = 25

z = 19.5 - 20/ 4/V25

= -.5 / 4/5

= -.5 * 5/4

= -2.5/4

=  - .625

Expert:  RoberttheRocket replied 11 years ago.

I notice one of your problems has "m" as a population mean.   Most statistics books has "m" as the sample mean.  If you're instructor or book has "m" as the population mean, then m would represent "1. The population mean consumption of cheese in 1985. "

Customer: replied 11 years ago.
I have four other questions for Statistics. Is there any way that you can answer them. I have had them out there since Sunday. If not, I will try another web site. Thanks

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

### What Customers are Saying:

• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Previous | Next >
• Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
• This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
• Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
• I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
• Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
• Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
• He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX

• ### LogicPro

#### Satisfied Customers:

4925
Expert in Java C++ C C# VB Javascript Design SQL HTML
< Last | Next >

### LogicPro

#### Satisfied Customers:

4925
Expert in Java C++ C C# VB Javascript Design SQL HTML

### Manal Elkhoshkhany

#### Satisfied Customers:

4538
More than 5000 online tutoring sessions.

### Linda_us

#### Satisfied Customers:

3138
Post Graduate Diploma in Management (MBA)

### Chris M.

#### Satisfied Customers:

2602
Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

### F. Naz

#### Satisfied Customers:

2126
Experience with chartered accountancy

### Bizhelp

#### Satisfied Customers:

1887
Bachelors Degree and CPA with Accounting work experience

### Seanna

#### Satisfied Customers:

1781
3,000+ satisfied customers, all topics, A+ work