User Account

All Pages

Probability that the sample mean tensile strength

Assignment Help Basic Statistics
Reference no: EM131703199

1. The tensile strength of a certain type of wire is normally distributed with a mean of 98.5 and a standard deviation of 10.8. If you draw a sample of size eighty-one from this population, what is the probability that the sample mean tensile strength will be between 96.5 and 100.5?

2. A doctor wishes to develop an interval estimate for scores on a patient questionnaire. She wants the interval to be within 5 points with a 99% confidence level. She does not know the standard deviation, but in previous years the scores have ranged from 48 to 97. How large a sample should she draw?

Reference no: EM131703199

Questions Cloud

Compute the t-statistic : We have the following data: sample mean ¯x= 42.6, sample deviation s= 2, number of samples n= 33 and the null hypothesis is µ0= 42.
Define the transition to a value based system : The healthcare system is slowly making the transition to a value based system
Pounds with a standard deviation : The average weight of football players on a team has been computed to be 235.5 pounds with a standard deviation of 30.5 pounds.
Define dialectical process of thought and review of thought : What is the process by which people might best set out doing this using a dialectical process of thought and review of thought and positions taken
Probability that the sample mean tensile strength : If you draw a sample of size eighty-one from this population, what is the probability that the sample mean tensile strength will be between 96.5 and 100.5?
What role does the vocal play in contrast to the instrument : "Whole Lotta Love" by Led Zeppelin is based on a riff. What is the song form and how does this dissection help analyze how the song is performed?
Find maximum value of the standard deviation : Suppose the mean cannot be adjusted, but the standard deviation can be reduced. What maximum value of the standard deviation would make 90%.
Mean luggage capacity for similar vehicles : The results yield an average of 12.3 cubic feet with a standard deviation of 1.5 cubic feet. Construct a 95% confidence interval for the mean luggage capacity.
Discuss the categorical imperative : How are the perfect and imperfect duties determined using the Categorical Imperative

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determining mean amount spent on insurance

Assume then money spent is uniformly distributed between these amounts. Determine the mean amount spent on insurance?

  How many persons should be included in the sample

If she feels certain that the percentage is somewhere between 20% and 40%, how many persons should be included in the sample?

  Is there evidence of a linear trend

Consider cooperation use (x) as a predictor of average payoff (y). Based on the scattergram, is there evidence of a linear trend?

  Probability that at least one of the bonds defaults

1. What is the probability that at least one of the bonds defaults? 2. What is the probability that neither the seven-year AA-rated bond nor the seven-year A-rated bond defaults?

  Find the covariance matrix of the yn

A sequence of zero mean unit variance independent random variables- Find the covariance (correlation) matrix of the Yn.

  Markov analysis and forecasting

1. According to Markov Analysis and Forecasting describe the internal labor market of the company in terms of job stability, promotion paths and rates, transfer paths and rates, demotion paths and rates, and turnover rates?

  Find upper bound on probability of having more than 200 cars

Use Markov's inequality to find an upper bound on the probability of having more than 200 cars arrive in an hour.

  Develop estimated regression equations

HI6007 Group Assignment. Develop estimated regression equations, first using annual income as the in- dependent variable and then using household size

  Remission time-depressed individuals

Medical researchers interested in determining the relative effectiveness of two different drug treatments on people with a chronic mental illness established two independent test groups.

  What is the percentile ranking for that height

Find the height such that about 25% of college women are shorter than that height. What is the percentile ranking for that height?

  Exponential model for network growth

brief discussion telling why you chose this particular data set to study. As in discussion two, I am hoping that you will choose data that has some relevance to your life.

  P-value would be associated with the data

Suppose Ho: px = py isbeingtested agrunst H1:Px *py oo the basis of two independent sets of 100 Bernoulli trials. If x , the number of successes in the first set, is 60 and y , the number of successes in the second set, is 48, what P-value would b..

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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