Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1) Student was enquired to find out mean and standard deviation for sample of n = 5 given below:

81, 87, 89, 86, and 87. To make simpler the arithmetic, student first subtracted 80 points from each score to get a new sample consisting of 1, 7, 9, 6, and 7. The mean and the standard deviation for new sample were then computed to be M = 6 and s = 3. Determine the values of the mean M and the standard deviation s for original sample?

2)  There are two various formulas or methods which can be utilized to compute SS.

Under what situation is the definitional formula easy to utilize?

Under what situation is the computational formula easy to utilize?

3) A sample of n = 9 has mean of M = 10. One person with score of X = 2 is separated from sample. Determine the value of the new sample mean?

4) Does it ever appear to you that weather is nice during work week, but dreadful on the weekend? Cerveny and Balling have confirmed that this is not your imagination; pollution accumulating during work week most probable spoils weekend weather for people on Atlantic coast. Suppose that the following hypothetical data the daily amount of rainfall for 10 wks in the summer given below.

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) Compute average daily rainfall in the week and for weekends.

b) Based on two means, does there show e a pattern in data? Based on the part (a) formulate the conclusion.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M910696

Have any Question? 


Related Questions in Statistics and Probability

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 ...

1 what is the relationship between confounding and internal

1. What is the relationship between confounding and internal validity? 2. What are experimenter expectancy effects, and how do researchers minimize them? 3. Should demand characteristics be eliminated or strengthened in ...

Produce an spss output for an independent- samples t-test

Produce an SPSS output for an independent- samples t-test comparing male and female scores on self-esteem. a.) what are the null and alternative hypothesis? b.) What is the value of Cohen's d? Report in APA format. c.) W ...

125 wordshow did the theodore d weld william lloyd garrison

125 words How did the Theodore D. Weld, William Lloyd Garrison, Arthur and Lewis Tappan, and Elizur Wright, Jr assist in the freeing of or ending of slaves/slavery?

Regression analysiscalculate then explaininterpret the

Regression analysis Calculate then explain/interpret the following 14 tasks/tests using the dependent variable (labeled Y)(Sales) and the independent variables (labeled X1 (Calls), X2 (Time), and X3(Years)). Attached is ...

In your words demonstrate your understanding on the

In your words, demonstrate your understanding on the following concepts: a) Survival analysis b) Life table c) Kaplan-Meier curve d) Logrank test e) Negative exponential survival distribution f) Cox proportional hazards ...

1 find the p valuep for the indicated hypothesis test with

1) Find the P value(P= ?) for the indicated hypothesis test with the given standardized test statistic z. Decide whether to reject Ho for the given level of significance.  Two tail test, z = 2.30, alpha = 0.01 2) Find th ...

The mean gross annual incomes of certified plumbers are

The mean gross annual incomes of certified plumbers are normally distributed with the mean of $36,000 and a standard deviation of $3,572. The ship building association wishes to find out whether this number is still accu ...

Problem 1 three times each day a quality engineer samples a

Problem 1: Three times each day, a quality engineer samples a component from a recently manufactured batch and tests it. Each part is classified as conforming (suitable for its intended use), downgraded (unsuitable for t ...

1 why do researchers use inferential statistics2

1. Why do researchers use inferential statistics? 2. Distinguish between the null hypothesis and the experimental hypothesis. 3. When analyzing data, why do researchers test the null hypothesis rather than the experiment ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen