Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1) For the sample with a standard deviation of 10, a score of X = 44 corresponds to a z-score of 0.50. Based on this information, determine the sample mean?

2) Which of the following exam scores must lead to the better grade?  Describe your answer with detailed explanation.

a) A score of X = 55 on an exam which has the mean of 60 and a standard deviation of 5.

b) A score of X = 40 on the exam which has the mean of 50 and a standard deviation of 20.

3) For a sample with mean = 50 and standard deviation = 10.

a) Determine the z-score for each of the following X values:

X = 60
X = 75
X = 30

b) Now determine the score (X value) which corresponds to each of the z-scores given below:
z = 0.8
z = 1.5
z = -1.5

In a typical week, how many times do you eat at the fast food restaurant?  The following data was then collected:

No. of times per week              No. of students
5 or more                                         2
4                                                      2
3                                                      3
2                                                      6
1                                                      0
0                                                      3
Total                                                 6

Assume you randomly choose one person from this sample of students.

A. Determine the probability that the student eats at a fast food restaurant 5 or more times per week?

B. Determine the probability that the student eats at a fast food restaurant 2 or more times per week?

C. What are the odds that student eats at the fast food restaurant zero times per week?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M910330

Have any Question? 


Related Questions in Statistics and Probability

Jenks co partially refunded 180000 of its outstanding 10

Jenks Co. partially refunded $180,000 of its outstanding 10% note payable, made 1 year ago to Arma State Bank by paying $180,000 plus $18,000 interest (having obtained the $198,000 by using $52,400 cash and signing a new ...

Among the best companies to work for in the us 33

Among the best companies to work for in the US, 33% experienced double digit job growth, 49% experienced single digit growth, and 18% experienced no growth or decline. A closer examination of the 30 companies that make u ...

In the following cross-lagged panel design does x appear to

In the following cross-lagged panel design, does X appear to cause Y, does Y appear to cause X, do both variables influence each other, or are X and Y unrelated?

The mean sat score in mathematics is 515 the founders of a

The mean SAT score in mathematics is 515 . The founders of a nationwide SAT preparation course claim that graduates of the course score higher, on average, than the national mean. Suppose that the founders of the course ...

Question 67 of laguardia students are female a random

Question: 67% of LaGuardia students are female. A random sample of 6 students is to be selected. Let the random variable X be the number of female students in a sample. a.) Explain why X is a binomial random variable. (F ...

What have you learned about the city-states in greece that

What have you learned about the city-states in Greece that you can apply to creating contact between your band of survivors and other survivor groups? Does a city-state work for your group or do you want to form another ...

In a clinical study of an allergy drug 103 of the 202

In a clinical study of an allergy drug, 103 of the 202 subjects reported experiencing significant relief from their symptoms. At the 0.05 significance level, test the claim that more than half of all those using the drug ...

Question 1 -happy harrys hamburgers recently commissioned a

Question 1 - Happy Harry's Hamburgers recently commissioned a top tier consulting company to develop a new location selection process. However, after receiving the first invoice from the consulting company, Happy Harry w ...

Given the following waiting time distribution in a hotel

Given the following waiting time distribution in a hotel, compute the  expected value  of the waiting time in 2 dec pl.    Waiting time (minutes) Probability 4.0            20% 4.5 28% 5.0 32% 5.5 10% 6.0 10%

An airplane manufacturer currently produces six models of

An airplane manufacturer currently produces six models of airplanes for commercial sale. the airline that lauren works for is rapidly expanding and would like to purchase three airplanes of different models to service va ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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