Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

problem 1:

a) A manufacturer claims that at least 95% of the equipment which he supplies to a factory conforms to specifications. An examination of a sample of 200 pieces of the equipment revealed that 18 were faulty. Test his claim at a significant level of 0.05.

b) In a random sample of 1000 persons from town A, 400 are found to be consumers of wheat. In a sample of 800 from town B, 400 are found to be consumers of wheat. Do such data reveal a significant difference between town A and town B, so far as the proportion of wheat consumers is concerned?

problem 2:

a) A manufacturer claims at least 95% of the equipment which he supplied to a factory confirmed for specifications. An examination of sample of 200 pieces of equipment revealed that 18 were faulty. Test his claim at 5% level of significance.

b) In a random sample of 160 workers exposed to a certain amount of radiation,24 experienced some ill effects. Construct 95% confidence interval for the true percentage.

problem 3:

a) In a large city 12 out of a random sample of 400 men were found to be drunkards. After the heavy increase in tax on intoxicants another random sample of 200 men in the same city included 8 drunkards. Was the observation decrease in the proportion of drunkards, after the increase of tax.

b) The owner of a machine shop must decide which of two snack vending machines to install in his shop. If each machine is tested 250 times, the first machine fails to work 13 times and the second machine fails to work 7 times test at the .05 level of significance whether the difference between the corresponding sample proportions is significant.

problem 4:

a) A study shows that 16 of 200 Tractor’s produced on one assembly line required extensive adjustments before they could be shipped, while the same was true for 14 of 400 tractors produced on another assembly line. At the .01 level of significance, does this support the claim that the second production line does superior work.

b) In a random sample of 1000 persons from town A, 400 are found to be consumers of wheat. In a sample of 800 from town B, 400 are found to be consumers of wheat. Do these data reveal a significant difference between town A and town B, so far as the proportion of wheat consumers is concerned?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M93269
  • Price:- $70

Priced at Now at $70, Verified Solution

Have any Question? 


Related Questions in Statistics and Probability

Jullian was curious if regular excise really helps weight

Jullian was curious if regular excise really helps weight loss,she decided to perform a hypothesis test. A random sample of 5 Kansas State students was chosen. The students took a 30-minute exercise every day for 6 month ...

Throughout the early 1800s the influence of

Throughout the early 1800's the influence of industrialization and the repeated subjugation of Native Indians and slaves caused people to reflect on their role in society and attempt to reform elements of their daily liv ...

A random sample of 1260 adults living innbspnew york

A random sample of 1,260 adults living in New York city was asked (among other things) to name their favorite sports (to watch). Of the 670 females in the survey, 375 indicated that baseball was their favorite sport. Of ...

An iq test is designed so that the mean is 100 and the

An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be ...

A professor has learned that four students in her class of

A professor has learned that four students in her class of 18 will cheat on the exam. She decides to focus her attention on seven randomly chosen students during the exam. a. What is the probability that she finds at lea ...

In a pulse rate research a simple random sample of 120 men

In a pulse rate research, a simple random sample of 120 men results in a mean of 80 beats per minute, and a standard deviation of 11 beats per minute. Based on the sample results, the researcher concludes that the pulse ...

The number of credits being taken by a sample of 13

The number of credits being taken by a sample of 13 full-time college students are listed below. Find the mean, median, and mode of the data, if possible. If any measure cannot be found or does not represent the center o ...

An employer interviews 9 people for 6 computer programming

An employer interviews 9 people for 6 computer programming positions in a company, and 4 of the 9 people are men. If all 9 are qualified, in how many ways can the employer fill the computer programming positions if exact ...

1 write the general form of a regression equation that has

1. Write the general form of a regression equation that has a single predictor variable. Identify the criterion variable, the predictor variable, the regression constant, and the regression coefficient. 2. A regression e ...

Pretend we are playing a coin-tossing game we will toss 100

Pretend we are playing a coin-tossing game. We will toss 100 pennies (all distinguishable) into the air, and there is an equal chance they will land on the table or on the floor. What is the dimensionless entropy associa ...

  • 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