Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1. According to Chebyshev's theorem, proportion of values from data set that is further than two standard deviations from mean is at most:

A. 0.50    

B. 0.13

C. 1.00

D. 0.25

2. In the study of elephants a researcher wishes to find out the average weight of the certain subspecies of elephants. From previous studies, the standard deviation of weights of elephants in this subspecies is known to be 1500 pounds. How many elephants does the researcher require to weigh so that he can be 80% confident that the average weight of elephants in his sample is in 350 pounds of true average weight for this subspecies?

A. 31       

B. 39       

C. 50       

D. 166     

3. A snack food manufacturer chosen a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and sample standard deviation is 0.15, find out the 95% confidence interval estimate for true mean weight of bags of this kind of pretzel.

A. (9.92, 12.34)   

B. (8.54, 11.46)

C. (10.42, 10.58)

D. (9.92, 10.08)

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922659

Have any Question? 


Related Questions in Statistics and Probability

1 why do researchers use factor analysis2 imagine that you

1. Why do researchers use factor analysis? 2. Imagine that you conducted a factor analysis on a set of variables that were uncorrelated with one another. How many factors would you expect to find? Why?

How does the competitive success of ords kangaroo rat

How does the competitive success of Ord's kangaroo rat change in the absence of coyotes? Propose one possible cause for the decline in rodent diversity in the control areas after treatment begins. What is the impact of c ...

250 -300 wordsexplain the history behind the black soldier

250 -300 words Explain the history behind the Black Soldier of the Civil War In this forum look beyond the book for information on specific units, soldiers and even the reasons for why Lincoln allowed the African America ...

Relate the content of this video to the industry segment of

Relate the content of this video to the Industry segment of the external environment by describing which of Porter's Five Competitive Forces is the focus of Outsell Consulting's value proposition? What is the nature of t ...

Anbsppsychologist would like to examine the effects of a

A psychologist would like to examine the effects of a new drug on the activity level of animals. Three samples of rats are selected with n = 5 in each sample. The rats in the first sample serve as a control and do not ge ...

Box a has 2 green and 5 blue marbles in it box b has 9

Box A has 2 green and 5 blue marbles in it. Box B has 9 green and 6 blue marbles in it. A marble is drawn from Box A, transferred to Box B, and then a marble is drawn from Box B. What is the probability a blue marble was ...

Using size as the independent variable and cost as the

Using "size" as the independent variable and "cost" as the dependent variable, draw a scatter plot. b. Does it appear from inspection that there is a relationship between the variables? Why or why not? c. Calculate the l ...

Discuss the changes to european imperialism between the

Discuss the changes to European imperialism between the World Wars.

In an investigation of environmental causes of disease data

In an investigation of environmental causes of disease, data were collected on the annual mortality rate ( deaths per 100,0000) for males in 61 large towns in England and Wales. In addition, the water hardness was record ...

1 true or false justify for

1. True or False. Justify for fullcredit. (a) A is an event, and Ac is the complement of A, then P(A AND Ac ) =0. (b) If the variance of a data set is 0, then all the observations in this data set must bezero. (c) If a 9 ...

  • 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