Concept of representative sample

Assignment Help Basic Statistics
Reference no: EM1386099

A researcher wants to collect data about the study habits of sophomores at Harmond University. From the sophomore class of 2,300 students, she wants to collect a sample of 70 students. Which of the following sampling methods will yield the most representative sample?

A. Assigning each sophomore a number and then randomly generating 70 numbers from that list.

B. Randomly selecting 70 sophomores entering the university's main library on a randomly selected evening.

C. Selecting the 70 sophomores whose grade point averages (GPA) fall closest to the mean GPA of the sophomore class.

D. Randomly selecting 70 sophomores who are members of college fraternities.

Reference no: EM1386099

Questions Cloud

How many girls attended the first session of swimming : Two sessions of swimming lessons were held at a pool. In the first session 40 students attended. Of these 40 students 60% were girls.
Construct a multiple regression model : So construct a multiple regression model for predicting the crime rate based upon various explanatory variables unemployment rate, median income, education level.
Major actors in protein synthesis : Explain in molecular detail how scientists could develop antibiotics that contact multiple sites on rRNAs and /or r-proteins within the bacterial ribosome.
The implementation of customer database and crm : the implementation of customer database and CRM in ConnectCom has been initiated by which of the radical change triggers? Discuss with proper reasoning.
Concept of representative sample : A researcher wants to collect data about the study habits of sophomores at Harmond University. From the sophomore class of 2,300 students, she wants to collect a sample of 70 students. Which of the following sampling methods will yield the most re..
Principle of sufficient reason : Please determine2-3 examples that seem to disprove the Principle of Sufficient Reason (specifically pertaining to the well-known expressions of: entity, x, event, e, and proposition, p).
Splicing steps that result in removal of introns : Explain the two consecutive splicing steps that result in removal of introns. Splicing fidelity relies on specific recognition of introns by the splicing machinery.
Estimate ltm-s proposal and short-term projects : Explain three short-term projects which must be developed immediately at Clarion. Explain how to effectively prioritize the projects.
Example for one of fallacies : Then provide an example for one of the fallacies, the first sentence should be the premise making it a true statement and the second the conclusion that commits the fallacy.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Generate descriptive statistics

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

  Calculating probabilities for events

Use this information to construct a probability table, and then calculate each of the following probabilities:

  Probability for simple random sample

What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?

  Sample standard deviations

The sample size  n , the sample means, and the sample standard deviations for the two groups are given below.

  Descriptive statistics for original-transformed variables

Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables

  Describing difference in variances

At α = .05, is there a difference in variances? Illustrate all steps clearly, including illustration of the decision rule.

  Appropriate chi-square distribution

A sample of  n  observations is taken from a population. When performing statistical inference about a population variance, the appropriate chi-square distribution has:

  Implementing pilot predictor test

A year ago, Air Force implemented new test for finding which candidates are most probable to become successful pilots.  Now they wish to see if implementing pilot predictor test was a good idea. Scores have been standardized to facilitate comparis..

  Determine probability that neither truck is available

If probability the first truck is available is= .75, probability the second truck is available is= .50, and probability both are available is= .30, determine the probability which neither truck is available?

  Minimizing cost of meeting demands

Find out how to minimize cost of meeting demands in Houston and Tampa.

  Test whether the mean is greater

At the .01 level of significance, is the true mean greater than 10?

  Probability that mean weight of loads is more than a range

If random sample of 9 loads is selected for a weight check, determine the probability that mean weight of those loads is more than 40.60 tons.

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd