random sampling
random sampling
random sampling. CSTS-SEU-KSA
___________________________________________________________________
Try to write an academic paper with us
Do not struggle with your Assignment when we are here to help. We are aware that every student aims at getting better grades. This prompts most of them to look for help on online platforms like ours.
Get Answer Over WhatsApp Get Your Custom Answer NowWe guarantee professional assistance in completing papers of all academic levels and subjects.
Statistics (STAT-101)
Assignment-2 (Weeks: 5-7)
1st Semester, 1439-1440 (2018-2019)
Due date: 20/10/2018 (Time: 10:30 PM)
Student’s Name | |
Student’s ID | |
Section/CRN | |
Location |
Marking Scheme | ||
Question | Score | Obtained Score |
Q-1 | 3 | |
Q-2 | 3 | |
Q-3 | 3 | |
Q-4 | 3 | |
Q-5 | 3 | |
Q-6 | 3 | |
Total | 18 |
Note: You are required to fill your full name, ID and CRN.
Solve the following questions
1. A bag has 4 types of coins as given below:
• Two $1
• Three $5
• One $10
• Three $20
a. Construct a probability distribution table for the data.
b. Calculate the variance.
2. One Market Research company determined that 13% of college students work part-time during the academic year. For a random sample of 5 students, what is the probability that
at least 3 students work part-time?
3. Find
a)
b)
c)
random sampling
4. Cream cheese is sold in cans that have a net weight of 8 ounces. The weights are normally distributed with a mean of 8.025 ounces and a standard deviation of 0.125 ounces. You take a sample of 36 cans. Compute the probability that the sample would have a mean 7.995 ounces or more.
5. Suppose you survey that a random sample of 150 people from one hospital has been given cholesterol tests, and 60 of these people had levels over the “safe” count of 200. Construct a 95% confidence interval for the population proportion of people in test with cholesterol levels over 200.
6. This is observation from previous years about the impact of students working while they are enrolled in classes, due to students too much work, they are spending less time on their classes. First, the observer need to find out, on average, how many hours a week students are working. They know from previous studies that the standard deviation of this variable is about 5 hours. A survey of 200 students provides a sample mean of 7.10 hours worked. What is a 95% confidence interval based on this sample?
Get help with your homework
It\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s easy to get help! You can choose when you want to receive the answer, add any comments and attach any important documents. One of our tutors will respond to you as quickly as possible, sometimes in minutes. They will do everything possible to assist you.We are available 24x7 to deliver the best services and assignment ready within 3-4 hours? Order a custom-written, plagiarism-free paper
Get Answer Over WhatsApp Get Your Custom Answer Now