Determine sample obtained for students of college

Assignment Help Basic Statistics
Reference no: EM13112017

To assess opinion of students at Ohio State University about campus safety, reporter for student newspaper interviews 15 students she meets walking on campus late at night who are eager to give their opinion.

The sample obtained is

a. probably biased.

b. a simple random sample of students feeling safe.

c. a stratified random sample of students feeling safe.

d. a probability sample of students with night classes.

Reference no: EM13112017

Questions Cloud

How will the molecular pathway of hormone-receptor : alter the receptor protein surface so that the receptor can no longer interact with Hsp70 protein, how will the molecular pathway of hormone-receptor interaction be altered?
Group of employees at large factory : A group of employees at a large factory was asked to indicate their preference for one of two pension schemes. The table below gives the responses of three different categories of employees at the factory.
Calculate the mass percent of methanol, ethanol and mtbe : Calculate the mass percent of methanol, ethanol, and MTBE, that must be present in gasoline to yield a mixture of 1.8% oxygen by weight.
Calculate mass of carbohydrate processed : Assume that a waste contains 395.0 mg/L of biodegradable CH2O and is processed through a 190000.0 L/day sewage treatment plant which converts 40% of the waste to CO2 and H2O.
Determine sample obtained for students of college : To assess opinion of students at Ohio State University about campus safety, reporter for student newspaper interviews 15 students she meets walking on campus.
Calculate volume of water contaminated : The partial pressure and Henry's law constants for SO2 and H2O2 are 2.7 ppm (KH = 1.2 mol L-1atm-1) and 4.9 ppb (KH = 1.0E5 mol L-1atm-1), respectively. Calculate the reaction rate of this process.
Briefly describe the health and environmental problems : Choose one of the following atmospheric issues: air pollution, global warming, ozone depletion, and acid deposition. Then, respond to the following,
Probability value and the significance level : What is the difference between the probability value and the significance level? Please, also provide examples.
What is the expected number of dna fragments : We have three plasmids: the cloning vector, pGEM, the one that result if BamHI had been used to construct the genomic library, and the one that would result if EcoRI had been used to construct the library. What is the expected number of DNA fragme..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Research questions with two way anova test

Using variables below, (1) mention all research questions that would be replied with a Two Way ANOVA test, (2) make null hypotheses for these questions.

  Computing probability values using the empirical rule

The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..

  Finding probabilities with binomial distribution

A regional manager visits local fast-food franchises and evaluates the speed of the service. If the manager receives her meal within 45 seconds, the server is given a free movie-admission coupon.

  Determining critical value for boundary of rejection region

Determine critical value for boundary of the rejection region (i.e., Zα).

  Find probability with the cards

An experiment consists of selecting a card at random from a 52-card deck. Refer to this experiment and find the probability of the event.

  What are independent variable and dependent variables

Katie is studying aggression among adolescent girls. She believes that there is a relationship between the level of interaction a girl has with her mother and her level of aggression.

  Mean vector and variance matrix of the random vector

Suppose X is a random variable with mean u and variance sigma2, Calculate the mean vector and variance matrix of the random vector Y = (X,2+3X)?

  Sample mean of iq scores and population mean

what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points? (Round your answer to four decimal places.)

  Find out a p-value for the hypothesis test

If the average daily intake among 25-34-year-old males in the general population is 15 g, then, using a significance level of .05, test the hypothesis that the intake of linoleic acid in this group is lower than that of the general population. Als..

  Confidence level to find the population proportion

A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion.

  Define standard error of the mean

Define the standard error of the mean. What happens to the standard error as the sample size increases? Explain

  A product is normally distributed with a mean

The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." What is the probability that the randomly selected unit from a recently manufactured batch weighs no more than 3.50 ounces.

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