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

Getting ready for a re-test for applied managerial

Getting ready for a re-test for Applied Managerial Statistics and will need some assistance. It is 24 questions and I have 3 hours once I access it. This should be an advanced question.

Determine the power for the following test of hypothesis h0

Determine the power for the following test of hypothesis. H0 : μ = 950 vs. H1 : μ ≠ 950, given that μ = 1,000, α = 0.10, σ = 200, and n = 25.

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 ...

An airline estimates that 92 of people booked on their

An airline estimates that 92% of people booked on their flights actually show up. If the airline books 76 people on a flight, find the propability that exactly 73 people will show up. for which the maximum number is 74, ...

1 you wish to learn the proportion of mba students that are

1.) You wish to learn the proportion of MBA students that are female within 3%, and with 98% confidence. How large of a sample should you get? 2.) You wish to learn the average age of an MBA student within 2 years and wi ...

In an investigation of environmental causes of disease data

In an investigation of environmental causes of disease, data were collected on the annual mortality rate ( deaths per 100,0000) for males in 61 large towns in England and Wales. In addition, the water hardness was record ...

1 should demand characteristics be eliminated or

1. Should demand characteristics be eliminated or strengthened in an experiment? Explain. 2. How do researchers detect and eliminate placebo effects? 3. What effect does error variance have on the results of an experimen ...

Kindergarten children have heights that are approximately

Kindergarten children have heights that are approximately normally distributed about a mean of 38.8 inches and a standard deviation of 1.5 inches. If a random sample of 21 is taken, what is the probability that the sampl ...

Ship collisions are rare in the houston ship channel the

Ship Collisions are rare in the Houston Ship Channel. The mean is .8 collisions in 6 months What is the probability of no collisions in 6 months. What is the probability of one collision in a year?

In a normal distribution what percentage of scores fall

In a normal distribution, what percentage of scores fall between -1 and +1 standard deviations from the mean? Between the mean and -2 standard deviations ? Between the mean and +3 standard deviations?

  • 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