1) Lily Energy Systems manufacturer’s wood-burning heaters and fireplace inserts. One of its systems has an electric blower, which is…
1) Lily Energy Systems manufacturer’s wood-burning heaters and fireplace inserts. One of its systems has an electric blower, which is thermostatically controlled. The blower is designed to automatically turn on when the temperature in the stove reaches 125°F and turn off at 85°F. Complaints from customers indicate that the thermostat control is not working properly. The company feels that the thermostat is acceptable if the variance in the cutoff temperature is less than or equal to 175. The company takes a sample of 24 thermostats and finds that the variance equals 289. The calculated chi-square test statistic and the table value for a 0.05 significance level are
A. 38.076, 38.99.
B. 37.983, 38.076.
C. 35.172, 38.99.
D. 37.983, 35.172.
I have put B
2) In testing the difference between two population means using two independent samples, the sampling distribution of the sample mean difference x̄1 − x̄2 is normal if the
A. sizes are both greater than 30.
B. populations are nonnormal and the sample sizes are large.
C. populations are normal.
D. population sizes are both greater than 30.
I have put C
3) In testing for the equality of two population variances, when the populations are normally distributed, the 10% level of significance has been used. To determine the rejection region, it will be necessary to refer to the Ftable corresponding to an upper-tail area of
A. 0.90.
B. 0.20.
C. 0.10.
D. 0.05.
I have put C
Can you help me with these questions please?
Calculate the price of your order
Select your paper details and see how much our professional writing services will cost.
- Freebies
- Format
- Formatting (MLA, APA, Chicago, custom, etc.)
- Title page & bibliography
- 24/7 customer support
- Amendments to your paper when they are needed
- Chat with your writer
- 275 word/double-spaced page
- 12 point Arial/Times New Roman
- Double, single, and custom spacing
-
We care about originality
Our custom human-written papers from top essay writers are always free from plagiarism.
-
We protect your privacy
Your data and payment info stay secured every time you get our help from an essay writer.
-
You control your money
Your money is safe with us. If your plans change, you can get it sent back to your card.
How it works
-
1
You give us the detailsComplete a brief order form to tell us what kind of paper you need.
-
2
We find you a top writerOne of the best experts in your discipline starts working on your essay.
-
3
You get the paper doneEnjoy writing that meets your demands and high academic standards!
Get your own paper from top experts
Order nowPerks of our essay writing service
We offer more than just hand-crafted papers customized for you. Here are more of our greatest perks.
Frequently asked questions
Get instant answers to the questions that students ask most often.
See full FAQWhat if I’m dissatisfied with the paper I get?
The average quality score at our professional custom essay writing service is 8.5 out of 10. The high satisfaction rate is set by our Quality Control Department, which checks all papers before submission. The final check includes:- Compliance with initial order details.
- Plagiarism.
- Proper referencing.
I need an essay on the same day. Is it something you can do?
Sure. Our writing company offers a fast service with an 8-hour deadline for orders up to master’s level. Make sure to specify the deadline in the order form and our writers will write a paper within the indicated timeslot. Just proceed to submit your requirements here Once you order a custom-written essay, our managers will assign your order to the well-suited writer, who has the best skills and experience for preparing your specific assignment. You can also request one of these extra features:- Choose the Writer’s Samples option – study 3 randomly-provided pages from orders that have been written by the assigned writer.
- Request a specific writer – choose an academic writer from the dropdown list in the order’s form (optional for returning customers).
How can I be sure your writing service is not a scam?
We understand that a shade of mistrust has covered the paper writing industry, and we want to convince you of our loyalty. Apart from high-quality writing services, we offer:- The chances of students to boost writing skills in a quick and effective way.
- The opportunity to manage studies and free time in an enjoyable manner.
- The possibilities to improve overall academic performance.
Is it legal to use your professional writing service?
Yes. Custom writing help is not prohibited by any university or college. It’s a 100% legal way of getting professional assistance with paper writing. Hiring writers from an essay writing company is in many ways similar to consulting a tutor – we help you solve the writing issues at hand.How does your service work?
Our custom writing service is a reliable solution on your academic journey that will always help you if your deadline is too tight. You fill in the order form with your basic requirements for a paper: your academic level, paper type and format, the number of pages and sources, discipline, and deadline. Then, you describe the specific details of the paper you need: add the topic, write or paste the instructions, and attach files to be used, if you have them. After that, an online customer support representative chooses the best writer that specializes in your discipline and assigns him or her to complete the paper according to your requirements. When the paper is ready, we check it for plagiarism and send it to you. If you want to change something, you can request a free revision.