Use standard deviations from samples and p-value method

Assignment Help Basic Statistics
Reference no: EM13147691

Ages of College Students The dean of students wants to see whether there is a significant difference in ages of resident students and commuting students. She selects a sample of 50 students from each group. The ages are shown here. At a  0.05, decide if there is enough evidence to reject the claim of no difference in the ages of the two groups. Use the standard deviations from the samples and the P-value method.

22 25 27 23 26 28 26 24
25 20 26 24 27 26 18 19
18 30 26 18 18 19 32 23
19 19 18 29 19 22 18 22
26 19 19 21 23 18 20 18
22 21 19 21 21 22 18 20
19 23

Commuter students
18 20 19 18 22 25 24 35
23 18 23 22 28 25 20 24
26 30 22 22 22 21 18 20
19 26 35 19 19 18 19 32
29 23 21 19 36 27 27 20
20 21 18 19 23 20 19 19
20 25

Reference no: EM13147691

Questions Cloud

Two of the eight categories : "compare and contrast two of the eight categories that attempt to explain criminal behavior". Class is CJS200 at University of phoenix......need it by end of night though
Explain why global warming is not likely to be solved : Explain why global warming is not likely to be solved by the market mechanism alone. Utilize the terms externality and public goods in your explanation.
Solve and validate using both mathematical equation : A 10 in diameter water main pipe carries a flow of 2 cfs. compute the pressure drop per mile of pipeline in psi. (Assume n=.013 for manning and C=100 for Hazen-William. Solve and validate using both mathematiacal equations and nomograph when applicab..
Explain the argument and comment : Economists’ models generally produce solutions that allow polluters to continue polluting to some degree. Why do economists favor allowing some pollution to continue? Provide a simple model that yields that result, explain the argument, and comme..
Use standard deviations from samples and p-value method : If there is enough evidence to reject the claim of no difference in the ages of the two groups. Use the standard deviations from the samples and the P-value method.
How are people in different countries likely to value effort : Given what you know about the likely effects of climate change, how are people in different countries likely to value efforts to reduce the rate of global warming?
Rationale for recognizing costs as expenses : Explain the rationale for recognizing costs as expenses at the time of product sale.
Define the effect of ommitting heating in acid-fast staining : What is the effect of varying the primary stain and counterstain in acid-fast staining?
Cost of inspection and budgeted amount : Inspection hours for the 10,000 tables varnished in September totaled 2,500 hours by 16 employees. Eight quarts of varnish were used, on average, for each table. The standard amount of varnish per table is nine quarts. The cost of inspection for S..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability of salary levels for faculty

The population mean annual salary for first year faculty at SLU is $47,000. Assuming that the population standard deviation is $1800:

  Confidence the mean reduction in time

Estimate with 95% confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.

  Determining expected value average of average

If many samples of size 1000 persons are chosen, determine the expected value (mean X-bar) or average of average IQ's for these samples?

  Computing the mean of uniform distribution

What is the mean of this uniform distribution? What is the standard deviation?

  Compute the total expected number of tests necessary

Assume the probability that a person has the desease is 0.08 for all people, independently of each other. Compute the total expected number of tests necessary.

  Find the probability the mean of the sample

A manufacturer claims that the life span of its tires is 51,000 miles. Assuming the manufacturer's claim is correct, what is the probability the mean of the sample is 50767 miles or less?

  Null hypothesis and one-tailed-two-tailed test

A researcher is looking at the relationship between home-schooling and achievement. She is hypothesizing that the home-schooled children will score higher than non home-schooled children on a standardized achievement test.

  Design and model resulting from analysis

An experiment is designed using three levels of ground clutter and two filter types. The experiment is performed by randomly selecting a treatment combination

  Confidence interval for mean amount of time ham is smoked

Length of smoking time was recorded for each. Mean was =140 hours. Suppose = 8 hours. Determine 95% confidence interval for mean amount of time grocery-store ham is smoked.

  Estimating the monthly cost of electricity

They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100.

  Minimizing shipping costs

Finnish Furniture manufactures tables in facilities located in three cities- Reno, Denver, and Pittsburgh. The tables are then shipped to three retail stores located in Phoenix, Cleveland, and Chicago.

  Explain application of binomial or poisson distribution

Identify a real-life example or application of either the binomial or Poisson distribution. Specify how the conditions for that distribution are met.

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