Percentage of architects have z scores

Assignment Help Basic Statistics
Reference no: EM131360898

1. On a standard measure of hearing ability, the mean is 300, and the standard deviation is 20. Provide the Z scores for persons whose raw scores are 340, 310, and 260. Provide the raw scores for persons whose Z scores on this test are 2.4, 1.5, and -4.5.

2. Using the unit normal table, find the proportion under the standard normal curve that lies in the tail for each of the following:

a. z = 1.00

b. z = -1.05

c. z = 0

d. z = 2.80

e. z= 1.96

3. Suppose the scores of architects on a particular creativity test are normally distributed. Using a normal curve table (pp. 477-480 of the text), what percentage of architects have Z scores

a. above .10?

b. below .10?

c. above .20?

d. below .20?

e. above 1.10?

f. below 1.10?

g. above -.10?

h. below -.10?

4. A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 102 students (N =102). He selects students by waiting at the door to the classroom prior to his lecture and pulling aside every third student to give him or her a questionnaire.

  1. Is this sample design an example of random sampling? Explain.
  2. Assuming that all students attend his class that day, how many students will the instructor select to complete his questionnaire?

5. Suppose you were going to conduct a survey of visitors to your campus. You want the survey to be as representative as possible.

a. How would you select the people to survey?

b. Why would that be your best method?

Reference no: EM131360898

Questions Cloud

Essay on the importance of healthy eating for children : Persuasive essay on the Importance of Healthy Eating for Children. Provides an overview of the issue you have selected, briefly describing main points and your argument
Select gary indiana school reform policy : Examine the relationship of the selected policy to historical and traditional methods of adopting school reform policies.Propose the modifications that you would like to make to the existing school reform policy.Determine three (3) ways to:Implement ..
National average for math portion of college board : Suppose that the national average for the math portion of the College Board's SAT is 535. The College Board periodically rescales the test scores such that the standard deviation is approximately 100. Answer the following questions using a bell-sh..
What is the normal bell curve : What is the normal Bell Curve? How do z scores and standard deviation relate to the Bell Curve? How are IQ scores plotted on the Bell Curve?
Percentage of architects have z scores : Suppose the scores of architects on a particular creativity test are normally distributed. Using a normal curve table (pp. 477-480 of the text), what percentage of architects have Z scores
Prepare a scientific paper discussing some polar habitats : Prepare a scientific paper discussing some polar habitats, ones that you don't necessarily think about all the time.
Explain power and compare how it relates to leadership : Explain power and compare how it relates to leadership. Analyze the five sources of power. Summarize the relationship between influence and power. Determine how relationships between leaders and staff affect influence and power.
What are the steps in the selection process at zappos : What are the steps in the selection process at Zappos? Does this seem like a complete selection process? If not, what steps would you add?Review the criteria for a successful selection method: reliable, valid, generalizable, practical, and legal. ..
Two companies creating value for their investors : At the end of the most recent fiscal year, Nike had shareholder's equity of $12B and Visa had shareholder's equity of $30B. During the current fiscal year, analysts' expect Nike to have net income of $3.24B and Visa to have net income of $6.58B. Assu..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd