Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

You're given the following frequency distribution for number of errors 55 students made in the test

Errors Frequency
0-2 11
3-5 14
6-8 9
9-11 4
12-14 7

 Find out:

a) mean,

b) variance

c) standard deviation.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922306

Have any Question? 


Related Questions in Statistics and Probability

1 here are several situations in which there is an

1. Here are several situations in which there is an incorrect application of the ideas in statistical inference. Write a sentence or two in each case explaining what is wrong and why it is wrong. (a) A significance test ...

A repeated-measures experiment comparing only two

A repeated-measures experiment comparing only two treatments can be evaluated with either a t statistic or an ANOVA. As we found with the independent-measures design, the t test and the ANOVA produce equivalent conclusio ...

Assignmentsuppose that there are two candidates ie jones

Assignment Suppose that there are two candidates (i.e., Jones and Johns) in the upcoming presidential election. Sara notes that she has discussed the presidential election candidates with 15 friends, and 10 said that the ...

Q1 a total 225 people were asked to report their hourly

Q1. A total 225 people were asked to report their hourly wages. The mean of the sample was 28 and it is known that the population standard deviation is 12 a) Find the 95% confidence interval for the mean. b) Find the 90% ...

Researchers investigated the issue of race and equality of

Researchers investigated the issue of race and equality of access to clinical trials. The table below shows the population distribution and the numbers of participants in clinical trials involving lung cancer. Race / eth ...

Suppose that a certain college class contains 42 students

Suppose that a certain college class contains 42 students. Of these, 23 are freshmen, 28 are history majors, and 8 are neither. A student is selected at random from the class. (a) What is the probability that the student ...

In pre election a candidate receives 330 out of 650 votes

In pre election , a candidate receives 330 out of 650 votes. Assuming that the people polled represents a random sample of voting population, test the claim that a majority of voters supports the candidate. Use a signifi ...

In the unit 4 discussion you were asked to create a

In the Unit 4 Discussion you were asked to create a research question and then convert that question into a null hypothesis and alternative hypothesis. You also determined if your alternative is one-tailed or two-tailed. ...

In 4-5 paragraphs describe gender roles how they were

In 4-5 paragraphs describe gender roles (how they were influenced/changed) though out middle ages (with specific examples of people, years etc.)

Emily marc and thomas meet at a party to which novelists

Emily, Marc, and Thomas meet at a party to which novelists and poets have been invited. Every attendee at the party is either a novelist or a poet (but not both). Every poet knows all the other poets, but every novelist ...

  • 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