Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Average of daily rainfalls for weekdays and weekends 

1. A sample of n = 9 has a mean of M = 10. One person with a score of X = 2 is removed from sample. What is the value of the new sample mean?

Hint: From the knowledge of n and M get the sum of the scores. Then subtract 2 from this sum and divide by the new n =8.

 2. Does it ever seem to you that the weather is nice during the work week, but lousy on the weekend? Cerveny and Balling (1998) have confirmed that this is not your imagination; pollution accumulating during the work week most probable spoils weekend weather for people on the Atlantic coast. Consider the following hypothetical data showing the daily amount of rainfall for 10 wks throughout the summer.

 

        Rainfall on Weekdays              1.2, 0.6, 0.0, 1.6, 0.8, 2.1, 0.2, 0 .9, 1.1, 1.4

        Rainfall on Weekends               1.5, 2.0, 1.8, 1.5, 2.2 2.4, 0.8, 1.6, 1.2, 1.7 

 

a. work out the average daily rainfall during the week and for the weekends. Hint: Obtain the average of the weekdays' rainfalls and the average of the weekend's rainfalls.

b. Based on the two means, does there appear to be a pattern in the data? Based on part (a) make your conclusion.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M918162

Have any Question? 


Related Questions in Statistics and Probability

Let x have a poisson distribution with parameter lambda

Let X have a Poisson distribution with parameter lambda. Show that E(X)= lambda directly from the definition of expected value. [Hint: The first term in the sum equals 0, and then x can be canceled. Now factor out lambda ...

1 draw a negatively skewed distribution2 what does it

1. Draw a negatively skewed distribution. 2. What does it indicate if a participant has a z-score of 2.5? -.80? .OO?

Research objectives to explore correlations between reward

Research Objectives To explore correlations between reward systems and team work attributes in the Saudi Arabian bank sector To explore relationships between reward systems and team work effectiveness in the Saudi Arabia ...

An auditor claims that the average annual salary of a

An auditor claims that the average annual salary of a project manager at a construction company exceeds $82,000. A random sample of 20 project managers had an average salary of $89,600 with a sample standard deviation of ...

1 a study was conducted at a local college to analyze the

1. A study was conducted at a local college to analyze the average GPA of students graduated from Arizona State in 2012. 100 students graduated from Arizona in 2012 were randomly selected,and the average GPA for the grou ...

Suppose amongst all the families on a caribbean cruise the

Suppose amongst all the families on a Caribbean Cruise, the population variance of the number of children per family is 4. If we were to take a sample of 10 families, then the probability is .9 that the sample variance i ...

The amount of time people spend in a clothing store is

The amount of time people spend in a clothing store is normally distributed with a mean of 18 mins and SD of 4 mins. If a sample of 20 customers is randomly selected. what is this probability they will spend more than 20 ...

Wat were the key political features of the roman republic

What were the key political features of the Roman Republic? How and why did this system of government collapse? Does our republic share any of the weaknesses of the Roman Republic?

Choose one historical event and discuss the effect that it

Choose one historical event and discuss the effect that it has has on you. Provide a rationale for your response.

Two population meansa tomato farmer with a very large farm

Two Population Means A tomato farmer with a very large farm of approximately 2200 acres had heard about a new type of rather expensive fertilizer which would supposedly significantly increase his production. The frugal f ...

  • 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