Subject Code : STA-320
Assignment Task:

INSTURCTIONS:

The font size must be a minimum of point 12 (Time new roman) for the body of assessment and must be use black color for answers. Your answer must be no longer than 50 words.

Questions 1:

A rowing team consists of four rowers who weigh 152, 156, 160, and 164 pounds. Find all possible random samples with replacement of size two and compute the sample mean for each one. Use them to find the sampling distribution of the sample mean. Also verify the results.

Questions 2:

Find all possible random samples without replacement of size two and compute the sample mean for each one from the following data of weights of pumpkins. Use them to find the sampling distribution of the sample mean. Also verify the results.

Pumpkin

A

B

C

D

E

F

Weight (in pounds)

19

14

15

09

10

17

Questions 3:

A sample of 20 people has a mean age of 21 with a standard deviation of 5. Test the hypothesis that the population mean is 18.9 at α = 0.05.

Questions 4:

Blood glucose levels for obese patients have a mean of 100 with a standard deviation of 17. A researcher thinks that a diet high in raw cornstarch will have a positive or negative effect on blood glucose levels. A sample of 30 patients who have tried the raw cornstarch diet have a mean glucose level of 145. Test the hypothesis that the raw cornstarch had an effect.

Questions 5:

The researcher needs to determine if girls on average score higher than 600 in the exam. The information that the standard deviation for girls’ scores is 100. The data of 20 girls was collected by using random samples and record their marks which are as under

Score: 650, 730, 510, 670, 480, 800, 690, 530, 590, 620, 710, 670, 640, 780, 650, 490, 800, 600, 510, 700.

Questions 6:

Students at Virginia Tech studied which vehicles come to a complete stop at an intersection with four-way stop signs, selecting at random the cars to observe. They looked at several factors to see which (if any) were associated with coming to a complete stop. (They defined a complete stop as “the speed of the vehicle will become zero at least for an [instant]”). Some of these variables included the age of the driver, how many passengers were in the vehicle, and type of vehicle. The variable we are going to investigate is the arrival position of vehicles approaching an intersection all traveling in the same direction. They classified this arrival pattern into three groups: whether the vehicle arrives alone, is the lead in a group of vehicles, or is a follower in a group of vehicles. The students studied one specific intersection in Northern Virginia at a variety of different times. Test the independence between the different groups of vehicles.

 

This STA-320: Statistics Assignment has been solved by our Statistics Experts at UniLearnO. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing style.

Be it a used or new solution, the quality of the work submitted by our assignment experts remains unhampered. You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turnitin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.

Eureka! You've stumped our genius minds (for now)! This exciting new question has our experts buzzing with curiosity. We can't wait to craft a fresh solution just for you!

  • Uploaded By : Alex Cerry
  • Posted on : August 01st, 2018

Whatsapp Tap to ChatGet instant assistance