User Account

All Pages

Another random sample of iq scores

Assignment Help Basic Statistics
Reference no: EM131936228

The IQ scores of children in a city are assumed to follow a normal distribution with unknown mean μ and known variance σ2. A random sample IQ scores with a size of 25 is drawn by a researcher. Based on this sample, a 97% confidence interval for μ is found to be (91.49, 104.51). 

(a) Show that σ = 15. 

(b) Another random sample of IQ scores with a size of 11 drawn and the scores are recorded as follows: 

134, 95, 102, 99, 91, 111, 127, 99, 101, 113, 105 

Based on the combined information of the two samples, test, at the 0.05 significance levels, whether or not the mean IQ score of the children in the city is less than the national average of 105.

Reference no: EM131936228

Questions Cloud

Provide the five most important factors about the law : Find something about the law that is a little known fact that directly affects ABC organization which puts the organization at risk.
Sample standard deviation : She takes a sample for 50 straight days and finds that the sample mean is 180 pounds with a sample standard deviation of 38.5 pounds.
What specific financing strategies would you implement : You are the manager of a company that produces automobiles. What specific financing strategies would you implement and why?
Define what is meant by risk and return : Write a five paragraph essay with the title: Risk and return. Define what is meant by risk and return. What role do markets play in risk and return
Another random sample of iq scores : Another random sample of IQ scores with a size of 11 drawn and the scores are recorded as follows:
How will the organizations training needs be determined : provide the advantages, disadvantages and at least two metrics for evaluating the training - How will the organizations training needs be determined
What are the total operating cash flows in year zero : What are the total Initial Cash Flows in Year 0? What are the total Operating Cash Flows in Year 2?
Sample of spheres categorized : The sample of spheres categorized from soft to hardest.
Develop various data model to simulate an information system : Develop various data models to simulate an information system that provides business information for decision making.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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