User Account

All Pages

What does the symbol x-bar represent

Assignment Help Basic Statistics
Reference no: EM132845692

a) What does the symbol x-bar represent?

b) What does the Greek letter mu (μ) represent as it was used in this week's lessons?

c) What is the difference between x-bar and mu?

3. Mean

a) Many people already know how to find the mean (average) of a sample of data by "adding all the numbers and dividing by the number of values in the dataset." Read Chapter 4, and then describe another method of finding the mean by using the sample space (list of possible values) and probabilities (the technique is in the book). Make a list of seven, 2-digit numbers (with no duplicates) and another set of seven probabilities (with no duplicates). The probabilities must add to 1.

Open R, and manually enter those numbers and their corresponding probabilities to calculate the mean using only addition and multiplication (in other words, enter only the numbers, the plus sign, and the * for multiplication, like on the bottom of Yakir, 2011, p. 57).

Paste all the R output below.

b) Describe in what the calculation is doing and what the answer means.

Reference no: EM132845692

Questions Cloud

Compute the company break-even point in unit sales : During its first year of operations, Haas produced 60,000 units and sold 60,000 units. Compute the company break-even point in unit sales
How did the purchase of the louisiana purchase transform : How did the purchase of the Louisiana Purchase transform America's understanding of itself? Could the War of 1812 be considered America's second war
What is the sampling distribution of the sample mean : What is the sampling distribution of the sample mean number of beds per household in Bamako, Mali?
What populations can be served by lifespan management : Your local TV station wants to feature you in a short video regarding lifespan management in your local community. What is lifespan management?
What does the symbol x-bar represent : a) What does the symbol x-bar represent? b) What does the Greek letter mu (µ) represent as it was used in this week's lessons?
What happened to people who invoked the fifth amendment : What happened to people who invoked the Fifth Amendment, refused to appear or were found in violation of the law as defined by the Congressional Committee.
Determine the goodwill or gain on bargain purchase : Determine the goodwill or gain on bargain purchase from the above transaction. Prepare the SFP of Ariadne after the merger
How do you scaffold instruction for your students : Understanding what students need to know is as important as knowing where they came from in the previous grade and where they are headed in the next grade.
Confidence interval estimate of the population proportion : Calculate by hand and interpret a 95% confidence interval estimate of the population proportion of U.S. workers who take their lunch to work with them.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Population proportion of productivity

In an online survey of 4001 respondents, 8% were classified as productivity enhancers who are comfortable with technology and use the internet for its practical value. Suppose you select a sample of 400 students at your school, and the population ..

  Loan officer rates applicants for credit

A bank loan officer rates applicants for credit. The ratings are normally distibuted with a mean of 200 and a standard deviation

  Confidence interval for the true population proportion

Find the 95% confidence interval for the true population proportion.

  Find margin of error to find confidence level

The mean score on a quantitative literacy test was 310 with a standard deviation of 114. Find the margin of error for this estimate at a confidence level of 95%.

  Whether given experiments was single blind or double blind

In each case, explain whether the experiment was a matched-pair design, a block design, or neither.- Explain whether each of the following experiments was single-blind, double-blind, or neither.

  Determine mean and standard deviation for population

Determine mean and standard deviation for the population. Draw the distribution and locate two scores on the sketch.

  Minutes of long-distance telephone calls

Suppose that the duration in minutes of long-distance telephone calls made from a certain city is found to be a random phenomenon

  Statistical significance and practical significance

What is the difference between statistical significance and practical significance? Why is statistical significance not necessarily of practical important difference to a business decision?

  Amount of dissolved oxygen in the river

Construct a 99% confidence interval for the mean amount of dissolved oxygen in the river.

  Create a histogram and relative frequency histogram

Create a histogram and relative frequency histogram for the data in table #2.2.10. Describe the shape and any findings you can from the graph

  Find conditional probability student is studying education

The student is studying education, is 0.8. What is the conditional probability that the student is studying education, given that she is a woman?

  The means and standard deviations of the times

Based on past experience, the shop manager makes the following assumptions about how long this may take:

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