1. A student knows they need to get 8 questions out of 10 correct on a final quiz in order to keep an A in the class. How many different combinations of 7 questions could they answer correctly out of the 10?2. Use R to denote brown eyes, L to denote Blue eyes, and B to denote blonde hair. Based on prior information, we know that roughly 32% of people have blue eyes and 33% of people have brown eyes. 45% of people have blue eyes and blonde hair, whereas only 7% of people have brown eyes and blonde hair. We also know that 50% of people have brown eyes or blonde hair. a. What percentage of people are blonde?b. What percentage of people do NOT have blue eyes or blonde hair? c. Are R and L mutually exclusive events? Why or why not? d. Are R and B mutually exclusive events? Why or why not? e. Are R and L independent? Explain, using probabilities. f. Are L and B independent? Explain, using probabilities.g. If we know someone has Brown eyes, what is the probability that they are also blonde?3. Similarly to #2, we know that 12% of people have green eyes. Suppose we take a sample of 25 people.a. How many adults are expected to have green eyes in the sample of 25? b. What is the standard deviation?c. What is the probability that exactly 2 people in the sample will have green eyes? d. What is the probability that more than 2 of people in the sample will have green eyes?4. The following information was gathered from 159 different beers. Each one had their percent alcohol recorded and the following frequencies were found: a. Find the average percent alcohol for these 159 types of beers. b. Find the standard deviation of this distribution.5. Assume the distribution of minutes spent exercising per week is Normal. We know from past information that the average amount of minutes spent exercising per week is 175 with a standard deviation of 184 minutes. Suppose we take a sample of 200 people.a. What is the probability that a randomly selected person will exercise more than 420 minutes per week, averaging an hour per day?b. What is the probability that a randomly selected person will exercise less than 210 minutes per week, which equates to the 30 minutes per day suggested by healthcare professionals?c. What is the probability that a randomly selected person will put in between an hour and three hours per week?d. What is the probability that the average amount of exercise per week per person in our sample of 200 will be more than 210 minutes per week? (Meaning that on average, they exercise more than the recommended minimum amount).e. What amount of minutes defines the lowest 24.2% of the distribution for an individual person?f. What amount of minutes defines the highest 7.93% of the distribution for an individual person?6. Suppose we go back to the example from question 3. Suppose the probability remains at 12% but we now take a sample of 50 people. a. What is the standard error of the proportion?b. What is the probability that the sample proportion of people with green eyes will be between 5% and 20%?7. Two estimates are available for the same population parameter. Estimate one has a standard deviation of 2.7 and estimate two has a standard deviation of 2.5. Estimate two is not consistent, whereas estimate one is consistent. Which estimate would you choose and why? 8. Suppose I have a large group of students to survey from. I decide to divide them up based on majors and then randomly sample from within each major. This is an example of which sampling method?
We provide professional writing services to help you score straight A’s by submitting custom written assignments that mirror your guidelines.
Get result-oriented writing and never worry about grades anymore. We follow the highest quality standards to make sure that you get perfect assignments.
Our writers have experience in dealing with papers of every educational level. You can surely rely on the expertise of our qualified professionals.
Your deadline is our threshold for success and we take it very seriously. We make sure you receive your papers before your predefined time.
Someone from our customer support team is always here to respond to your questions. So, hit us up if you have got any ambiguity or concern.
Sit back and relax while we help you out with writing your papers. We have an ultimate policy for keeping your personal and order-related details a secret.
We assure you that your document will be thoroughly checked for plagiarism and grammatical errors as we use highly authentic and licit sources.
Still reluctant about placing an order? Our 100% Moneyback Guarantee backs you up on rare occasions where you aren’t satisfied with the writing.
You don’t have to wait for an update for hours; you can track the progress of your order any time you want. We share the status after each step.
Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.
Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.
From brainstorming your paper's outline to perfecting its grammar, we perform every step carefully to make your paper worthy of A grade.
Hire your preferred writer anytime. Simply specify if you want your preferred expert to write your paper and we’ll make that happen.
Get an elaborate and authentic grammar check report with your work to have the grammar goodness sealed in your document.
You can purchase this feature if you want our writers to sum up your paper in the form of a concise and well-articulated summary.
You don’t have to worry about plagiarism anymore. Get a plagiarism report to certify the uniqueness of your work.
Join us for the best experience while seeking writing assistance in your college life. A good grade is all you need to boost up your academic excellence and we are all about it.
We create perfect papers according to the guidelines.
We seamlessly edit out errors from your papers.
We thoroughly read your final draft to identify errors.
Work with ultimate peace of mind because we ensure that your academic work is our responsibility and your grades are a top concern for us!
Dedication. Quality. Commitment. Punctuality
Here is what we have achieved so far. These numbers are evidence that we go the extra mile to make your college journey successful.
We have the most intuitive and minimalistic process so that you can easily place an order. Just follow a few steps to unlock success.
We understand your guidelines first before delivering any writing service. You can discuss your writing needs and we will have them evaluated by our dedicated team.
We write your papers in a standardized way. We complete your work in such a way that it turns out to be a perfect description of your guidelines.
We promise you excellent grades and academic excellence that you always longed for. Our writers stay in touch with you via email.