Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Find the probability and the inverse of the following problems.

The following three problems (i.e., problems 1-3) refer to the following information:

presume the scores on an exam are normally distributed with mean μ = 75 points, and standard deviation σ = 8 points.

1. The instructor wanted to "pass" anyone who scored above 69. What proportion of exams would have passing scores?

a..25

b..75

c..2266

d..7734

e.-.75

2.  What is the exam score for an exam whose z-score is 1.25?

a.65

b.75

c.85

d..8944

e..1056

3.  Presume that the top 4 percent of the exams will be given an A+. In order to be given an A+, an exam must earn at least what score?

a.61

b.73

c. .516

d.77

e. 89

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923281

Have any Question? 


Related Questions in Statistics and Probability

On a 2-d regular not wrapped-around mesh a message from a

On a 2-D regular (not wrapped-around) mesh, a message from a source (X s , Y s ) is to be sent to a destination (X d , Y d ). If any shortest path can be used, what is the probability that the message follows the shortes ...

1 a successive independent survey design and a longitudinal

1. A successive independent survey design and a longitudinal survey design both examine changes in responses over time. How do they differ in their approach? 2. Distinguish between demographic and epidemiological researc ...

Tell whether each of the following relationships reflects a

Tell whether each of the following relationships reflects a positive or a negative correlation: a. the amount of stress in people's lives and the number of colds they get in the winter b. the amount of time that people s ...

Prepare a paper in which you describe path analysis be sure

Prepare a paper in which you describe path analysis. Be sure to compare and contrast this technique with multiple regression analyses. Provide an example of when it would be useful to conduct path analysis by describing ...

Two sets of chromium analyses were performed on water

Two sets of chromium analyses were performed on water samples from a stream that runs near a chromium plating plant:                  Before the spill                                After the spill Mean :           0.95 ...

Connie wants to have an annuity payment of 2000 at the end

Connie wants to have an annuity payment of $2,000 at the END of every three months. How much should she deposit now at 6% interest, compounded quarterly, to yield this payment for 3 years? (Use Table 12-2 in your text) $ ...

1 explain the rationale behind time series designs2

1. Explain the rationale behind time series designs. 2. Describe the simple interrupted time series design. 3. Why is contemporary history a threat to internal validity in a simple interrupted time series design?

During a certain week the mean price of gas was 2709 per

During a certain week the mean price of gas was $2.709 per gallon. A random sample of 35 gas stations is drawn from this population. What is the probability that the mean price for the sample was $2.697 and $2.716 that w ...

30000 people participated in an online poll on cnncom

30,000 people participated in an online poll on cnn.com conducted in April 2012 asking "Have you ever driven with a pet on your lap?" 34% of the participants answered yes and 66% answered no. (a) Can we conclude that 34% ...

The university is attempting to set its staffing plan for

The University is attempting to set its staffing plan for the next several year, and it wants to determine if the distribution of students among various graduate majors has changed from the historical averages which were ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen