Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Hypothesis testing of a single mean.

Someone claims that the mean age of residents of a certain neighbourhood is 50, but you suspect that the mean age is actually higher than that. A sample of 36 residents reveals a mean age of 53, with a sample standard deviation of 15.

a. position the null and alternative hypotheses.

b. work out the value of the test statistic.

c. Taking α to be 0.05, what are the critical values associated with testing your hypothesis?

d. What end do you come to?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920283

Have any Question? 


Related Questions in Statistics and Probability

Pretend we are playing a coin-tossing game we will toss 100

Pretend we are playing a coin-tossing game. We will toss 100 pennies (all distinguishable) into the air, and there is an equal chance they will land on the table or on the floor. What is the dimensionless entropy associa ...

You are purchasing a home for 220000 the down payment is 30

You are purchasing a home for $220,000. The down payment is 30% and the balance will be financed with a 20- year mortgage at 9% and 2 discount points. You put down a deposit of $5,000 (applied to the down payment) when t ...

Suppose that you wanted to study children who have down

Suppose that you wanted to study children who have Down syndrome. How might you use cluster sampling to obtain a probability sample of children with Down syndrome in your state?

Scenario dr olson is interested in the effects of three

Scenario: Dr. Olson is interested in the effects of three different methods for losing weight in long-distance truck-drivers. He tested a sample of 60 truck drivers. Participants were randomly assigned to one of three gr ...

Designing and writing a report on a statistical study of

Designing and Writing a Report on a Statistical Study of Your Own Select a question of your own to investigate using one of the hypothesis tests studied in this class.  Explain why you chose the particular question to in ...

Consider rolling a fair 6-faced die twice let a be the

Consider rolling a fair 6-faced die twice. Let A be the event that the sum of the two rolls is at most 6, and B be the event that the first one is an even number. (a) What is the probability that the sum of the two rolls ...

Hello kitty company claims that the proportion of its

Hello Kitty Company claims that the proportion of its employees investing in individual investment accounts is higher than national proportion of 50%. A survey of 100 employees in Hello Kitty Company indicated that 58 of ...

I love juliet and i know that juliet loves me but i do not

I love Juliet, and I know that Juliet loves me, but I do not know if Juliet knows that I love her. Provide an Aumann model of incomplete information that describes this situation, and specify a state of the world in that ...

This exercise generalizes exercise 925 let n y fi fii s p

This exercise generalizes Exercise 9.25. Let (N, Y, F I , F II , s, P) be an Aumann model of incomplete information with beliefs in which N = {I, II} and let A ⊆ Y be an event. Consider the following process: Player I in ...

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 ...

  • 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