Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

describe probability using Z - score

1) Times spent studying by students in the week prior to final exams follow a normal distribution with standard deviation eight hours.  A random sample of four students was taken in order to estimate the callous study time for the population of all students.

1) describe the probability that the sample mean is more than 3 hours below the population mean?

2) describe the probability that the sample mean differs from the population mean by less than 2 hours?

1) It is desired to estimate the average total compensation of CEOs in the Service industry. Data were arbitrarily collected from 18 CEOs and the 97% confidence interval was intended to be ($2,181,260, $5,836,180). describe which of the following interpretations is correct?

1) 97% of the sampled total compensation values fell between $2,181,260 and $5,836,180.

2) We are 97% confident that the mean of the sampled CEOs falls in the interval $2,181,260 to $5,836,180.

3) In the population of Service industry CEOs 97% of them will have total compensations that fall in the interval $2,181,260 to $5,836,180.

4) We are 97% confident that the average total compensation of all CEOs in the Service industry falls in the interval $2,181,260 to $5,836,180

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920316

Have any Question? 


Related Questions in Statistics and Probability

Suppose that you wanted to study children who have down

Suppose that you wanted to study children who have Down syndrome. How might you use cluster sampling to obtain a probability sample of children with Down syndrome in your state?

A system has two components that operate in parallel at

A system has two components that operate in parallel. At least one of the components must function properly if the system is to function properly. The probabilities of failures for the components 1 and 2 during one perio ...

1 in an experiment with two independent variables an anova

1. In an experiment with two independent variables, an ANOVA partitions the total variance into four components. What are they? 2. MS wg  appears in the denominator of every F-test. Why?

An insurance company checks police records on 1200 randomly

An insurance company checks police records on 1200 randomly selected auto accidents and notes that teenagers were at the wheel in 180 of them. Construct a 90% confidence interval estimate of the proportion of auto accide ...

There are 1000 students in a high school among the 1000

There are 1000 students in a high school. Among the 1000 students, 150 students take AP Statistics, and 300 students take AP French. 100 students take both AP courses. Let S be the event that a randomly selected student ...

A smartphone company has to decide which battery they will

A smartphone company has to decide which battery they will use for their upcoming model. Two battery manufacturers A and B are competing to get the contract. 15 smartphones of the upcoming model were tested with batterie ...

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 ...

A coffee store owner knows that a customer gets a coffee in

A coffee store owner knows that a customer gets a coffee in 35% of the store's transactions. If we take a random sample of 300 customers, what is the probability that less than 32% of them buy a coffee? (A) 0.1292 (B) 0. ...

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 ...

1 do outliers increase or decrease the magnitude of

1. Do outliers increase or decrease the magnitude of correlation coefficients? 2. What impact does reliability have on correlation? 3. Why can't we infer causality from correlation?

  • 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