Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

problem 1:

a) The life time of electric bulbs for a random sample of 10 from a large consignment gave the given data:

1798_hypothesis of bulbs.jpg

Can we accept the hypothesis that the average life time of bulbs is 4000 hrs.

b) 4 Coins were tossed 160 times and the given results were obtained.

836_tossing of coins.jpg

Under the assumptions that coins are balanced, find out the expected frequencies of 0, 1, 2, 3 or 4. Heads . Test the goodness of fit with α = 5%

a) Compare the prices of a certain product in two cities ten shops were chosen at random in each town. The prices noted are given below.

2444_random price in city.jpg

Test whether the average prices can be said to be same in the two cities.

problem 2: The given table gives the classification of 100 work according to sex and nature of work. Test whether the nature of work is independent of the sex of the worker.

946_nature of work.jpg

problem 3:

a) A random sample of 10 boys had the following I.Q’s 70, 120, 110, 101, 88, 83,95, 98, 107, 100. Do these data support the supposition of a population mean I.Q. of 100.

1515_supposition mean of boys.jpg

Use 0.01 level of significance to test whether the difference between two sample means is significant.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M93272
  • Price:- $50

Priced at Now at $50, Verified Solution

Have any Question? 


Related Questions in Statistics and Probability

Is there any difference between the proportion of americans

Is there any difference between the proportion of Americans who wish they were rich and the proportion of Canadians who wish they were rich? A random sample of 1,000 Americans showed that 550 wish they were rich, while a ...

The two-person game shown in table 1 has a unique nash

The two-person game shown in Table 1 has a unique Nash equilibrium (see Moulin and Vial, 1978) in which each player's expected payoff is 3.

Assignment quantitative methodsquestion 1 a large shipping

ASSIGNMENT: QUANTITATIVE METHODS QUESTION 1: A large shipping company recorded the tonnage shipped weekly across the pacific for 50 weeks. The data is presented in the table below. 530 492 462 379 487 523 600 618 548 431 ...

A teacher rated the reading ability level of six fourth

A teacher rated the reading ability level of six fourth grade children in a special math program. The reading level ratings were as follows: 3, 3, 2, 8, 4, and 4. a. Compute the mean, variance, and standard deviation (by ...

A biology instructor believes that the average quiz score

A Biology instructor believes that the average quiz score is a good predictor of final exam score. A random sample of 10 students produced the following data where x is the average quiz score and y is the final exam scor ...

1 what kind of variance does the mean square within-groups

1. What kind of variance does the mean square within-groups (MS wg ) reflect? 2. The sum of squares between-groups (SS bg ) reflects the degree to which the condition means vary around the __________.

Three different brands of pain relief medication are

Three different brands of pain relief medication are available for minor aches and pains. It is of interest to know whether the mean time to relieve the pain differs from brand to brand. To find out, twelve individuals w ...

Let x0 x1 x2nbspbe three vectors in rn prove that these

Let x 0 , x 1 , x 2  be three vectors in R n . Prove that these vectors are affine independent if and only if none of them is a convex combination of the other two.

Suppose you have a stock portfolio where 28 of the stocks

Suppose you have a stock portfolio where 28% of the stocks earned a return of 12.2%, 12% earned a return of 15.1%, 24% of the stocks earned a return of 0%, 18% of the stocks earned a return of -1.5%, and 18% of the firms ...

Assume that womens heights are normally distributed with a

Assume that women's heights are normally distributed with a mean given by mu equals 63.3 in, and a standard deviation given by sigma equals 3.1 in. Complete parts a and b. a. If 1 woman is randomly selected, find the pro ...

  • 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