Almost all medical schools in the United States require students to take the Medical College Admission Test (MCAT). To estimate the mean score μ of those who took the MCAT on your campus, you will obtain the scores of an SRS of students. The scores follow a Normal distribution, and from published information you know that the standard deviation is 10.4 . Suppose that, unknown to you, the mean score of those taking the MCAT on your campus is 495 .
In answering the questions, use z‑scores rounded to two decimal places.
(a) If you choose one student at random, what is the probability that the student's score is between 490 and 500 ? Use Table A, or software to calculate your answer.
(Enter your answer rounded to four decimal places.)
probability:
(b) You sample 25 students. What is the standard deviation of the sampling distribution of their average score ?¯? (Enter your answer rounded to two decimal places.)
standard deviation:
(c) What is the probability that the mean score of your sample is between 490 and 500 ? (Enter your answer rounded to four decimal places.)
probability:
STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.51.5 inches square? Given are data from students doing a laboratory exercise.
33,190 | 31,860 | 32,590 | 26,520 | 33,280 |
32,320 | 33,020 | 32,030 | 30,460 | 32,700 |
23,040 | 30,9303 | 32,720 | 33,650 | 32,340 |
24,050 | 30,170 | 31,300 | 28,730 | 31,920 |
To access the complete data set, click the link for your preferred software format:
Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt!
We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds.
PLAN: We will estimate μ by giving a 90% confidence interval.
SOLVE: Find the sample mean ?¯ . (Enter your answer rounded to the nearest whole number.)
?¯=
Give a 90% confidence interval, [low,high] , for the mean load required to pull the wood apart. (Enter your answers rounded to the nearest whole number.)
???=
ℎ??ℎ=
In: Math
Question: Describe 6 products that you have experienced and describe what stage the product was in. I'll go first as an example. Vinyl Records/decline or niche, 8 track, cassettes decline-CD's decline or niche-I-Tunes; growth. Typewriters that were Manuel, decline electric typewriter's, decline or niche word processors maturity; Beepers decline; Black & White Television decline-color-high definition growth?
Again what products did you experience in your lifetime that fit into one of the stages of the Product Life Cycle?
In: Operations Management
●With so much work being done by work teams; in what ways can self-disclosure improve team performance?
●How does trust impact organizations? How can untrustworthy members impact an entire organization? How can organizations ensure members will be trustworthy?
In: Operations Management
Q in c++ Write a program that will find the inverse of any two dimensional array without the usage of the built-in function.? plz answer in while or do while loop
In: Computer Science
Discuss the rationale behind airport drainage. Problems that might arise through poor drainage and the legislation that includes airports.
In: Operations Management
A company has been granted a block of classless addresses which starts at 198.87.24.0/23. Create the following 4 subnets by calculating the subnet address for each subnet including the prefix. Create a table to organise your answer. Show your working in the space provided.
a) 1 subnet with 256 addresses (1 mark correct subnet, 0.5 mark good calcs)
b) 1 subnet with 128 addresses (1 mark correct subnet, 0.5 mark good calcs)
c) 2 subnets with 64 addresses each (1 mark per correct subnet, 0.5 mark good calcs per subnet)
In: Computer Science
Write a method in C# which takes string as an argument and extracts all words of length between 4 to 5 and contains vowels in it. Method returns an array of type string containing words which satisfied above criteria. Show these words in main().
In: Computer Science
Recreational marijuana was legalized in the state of Washington in July of 2014 creating a new source of revenue for the government. July 1, 2015, the state government raised excise taxes paid by marijuana retailers on final sales leading to the following effects on prices and quantity sold:
Effects on prices and quantity of marijuana sold in Washington, June and July 2015 |
Date |
Quantity Sold (average grams per day) |
Price (per gram) |
June 2015 (pre tax change) |
310.0 |
13.18 |
July 2015 |
307.0 |
13.48 |
The above example is adapted from a recent study into the effects of an increase in taxes on the marijuana market in Washington (Hansen, Miller, & Weber, 2017). The authors can estimate the price elasticity of demand from these data points because the sudden tax change created a ceteris paribus situation, where all other supply and demand conditions were held fixed, similar to the way our models assume in the textbook.
In that spirit, interpret the excise tax increases as an increase in input costs for marijuana dispensaries holding all other supply and demand characteristics fixed.
Effects on prices and quantity of marijuana sold in Washington, June and August 2015 |
Date |
Quantity Sold (average grams per day) |
Price (per gram) |
June 2015 (pre tax change) |
310.0 |
13.18 |
August 2015 |
303.1 |
13.48 |
In: Economics
When faced with symptoms of counselor burnout and/or compassion fatigue, what support would you seek in communicating with your clinical supervisor?
In: Psychology
Part I: Between-Groups Design
In the between-groups design, researchers were interested in whether cholesterol levels would differ depending on diet. Twenty participants were randomly assigned to one of two different groups. Group A was assigned a diet rich in fruits and vegetables and with no trans fats. Group B participants were asked to follow their normal diets, which contained varying levels of trans fats depending on the individual. After one month, blood samples were drawn and the following levels of cholesterol were obtained:
Participant |
Blood Cholesterol |
Diet |
1 |
129 |
Healthy |
2 |
98 |
Healthy |
3 |
150 |
Healthy |
4 |
75 |
Healthy |
5 |
135 |
Healthy |
6 |
175 |
Healthy |
7 |
115 |
Healthy |
8 |
103 |
Healthy |
9 |
156 |
Healthy |
10 |
143 |
Healthy |
11 |
239 |
Normal |
12 |
500 |
Normal |
13 |
350 |
Normal |
14 |
468 |
Normal |
15 |
198 |
Normal |
16 |
213 |
Normal |
17 |
225 |
Normal |
18 |
175 |
Normal |
19 |
560 |
Normal |
20 |
289 |
Normal |
In 2 to 3 sentences in a Microsoft Word document, answer the following questions:
Part II: Within-Subjects Design
In the within-subjects design, researchers were interested in whether participants could lower their cholesterol levels by changing from a diet higher in trans fats to one with no trans fats. Ten research participants were selected. A baseline measure of cholesterol was taken from each. They were then put on a diet rich in fruits and vegetables and devoid of trans fats for one month. At the end of that month, blood cholesterol was again measured and the following results were obtained:
Participant |
Blood Cholesterol |
Diet |
1 |
129 |
Baseline |
1 |
98 |
Healthy |
2 |
150 |
Baseline |
2 |
75 |
Healthy |
3 |
175 |
Baseline |
3 |
135 |
Healthy |
4 |
115 |
Baseline |
4 |
103 |
Healthy |
5 |
156 |
Baseline |
5 |
143 |
Healthy |
6 |
500 |
Baseline |
6 |
450 |
Healthy |
7 |
468 |
Baseline |
7 |
350 |
Healthy |
8 |
198 |
Baseline |
8 |
213 |
Healthy |
9 |
225 |
Baseline |
9 |
175 |
Healthy |
10 |
560 |
Baseline |
10 |
481 |
Healthy |
In 2 to 3 sentences in a Microsoft Word document, answer the
following questions:
In: Math
6. It's presidential primary season and canvassers are out talking to voters. In a city that's known to have 20% registered republicans, 5 canvassers each go to 50 randomly selected homes to ask about voting preferences. Amazingly, every home has someone willing to talk. Which of the following is the most plausible sequence of republican voters met by these canvassers?
a. 5%, 80%, 65%, 8%, 70%
b. they're all equally plausible
c. 15%, 25%, 22%, 28%, 20%
d. 20%, 20%, 20%, 20%, 20%
7.
The average birthweight of babies in Oregon is 3500 grams with a standard deviation of 500 grams. You collected 100 samples of 100 babies and calculated the mean weight of each of the samples. You then graph the means that you've calculated. What does your distribution of sample means look like?
a. it's pretty normal
b. it has no particular shape
c. it's skewed either left or right
8.
Still thinking about your distribution of the samples of baby weights, what would the standard deviation of your 100 sample means be?
a. more than 500 grams
b. not enough information to know
c, less than 500 grams
d. same as the population, 500 grams
In: Math
Write 2/3 page and explain eight ways to gain a competitive advantage and provide an example for each. You can write a scenario for a business of your choice to answer this assignment.
In: Operations Management
If I have a data warehouse for drugstores, what are the problems that this warehouse solves, what are its requirements and what is the process run for it?
In: Computer Science
Lab 7: 2D Arrays
Project Goals
The goals of this project are to:
1. Get students familiar with 2D arrays
2. Continue loop practice
Important Notes:
1. Formatting: Make sure that you follow the precise recommendations for the output content and formatting: for example, do not change the text of the problem from “Enter the number of rows in your array: ” to “Enter the number of rows: ”. Your assignment will be auto-graded and any change in formatting will result in a loss in the grade.
2. Comments: Header comments are required on all files and recommended for the rest of the program. Points will be deducted if no header comments are included.
Problem 1
Save your program as squaring.c
It’s better to be odd, so let’s square those values. Write a program which gets values into an array and then squares the odd values. The program should prompt the user to enter the number of rows -1[1] and columns they would like in an array. Then it should prompt the user to enter values to fill that array. It should iterate over all the values in the array and square any which are odd. Display those values back to the user.
The program should function as follows (items underlined are to be entered by the user):
Enter the number of rows in your 2D array: 2
Enter the number of columns in your 2D array: 2
Enter a value to save: 1
Enter a value to save: 2
Enter a value to save: 3
Enter a value to save: 4
1 2
9 4
Run your program again, testing it with different values.
Notes:
[1]I think this should be ...rows... and not ...rows-1...
In: Computer Science
How many people died, wounded, and the level of destruction for the Indian Ocean Tsunami?
In: Psychology