Independent random smaple

Assignment Help Basic Statistics
Reference no: EM13113956

Independent random samples taken at two companies provide the following information regarding the anual salaries of the employees.

WhitneyCo. Max Co.

sample size 72 50

Sample mean (in$1000) 48 43

Sample standard deviation 12 10

1.at 95% confidence test to determine whether or not there is significant difference between the average salaries of the employees of the two companies.

2. Compute the P-value.

Reference no: EM13113956

Questions Cloud

Find the probability that the network is robust : The network is said to be robust if at least one of the three servers operate more than 2 years. What is the probability that the network is robust?
Prepare a business plan for transport company : Prepare an individual, 2500 word business plan and group presentation detailing your business idea. Use the following details to help structure your business plan.
Calculate the number of kilograms of helium required : Calculate the number of kilograms of helium required to inflate a balloon with a volume of 100.000 L at a pression of 250 mmHg and atmospheric temperature of -35 ° C.
Determine which women asked to participate in study : Assume a sample of 25 women is needed for the study. What type/s of method/s of random selection can you use to determine which women should be asked to participate in the study?
Independent random smaple : Independent random samples taken at two companies provide the following information regarding the anual salaries of the employees.
Explain how political conditions in thailand could adverse : hat are the advantages to this type of attitude scale for this population? Explain how th political conditions in Thailand could adversely affect the cash flows of the MNC?
Explain promote a safe and sound banking system : Explain What forms does bank supervision take, and how does it help promote a safe and sound banking system?
Statistical significance-hypothesis testing : In the context of hypothesis testing regarding one mean, the test (Z or t) may be statistically significant at the 5% level, but not significant in a practical sense at all. Illustrate the meaning of this statement by citing 3 examples from any ar..
Calculate the total mass of sodium chloride : If the volume of ocean water (calculated above) contains 3.7 percent sodium chloride ("salt") by mass and the density of the water is 1.41 g/mL.

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Hypothesis test for mean with population standard deviation

Set up a null and alternative hypothesis to test whether this sample is falling below expectations.

  Difference in voting patterns

Can we conclude a difference in voting patterns for men vs. women? YES or NO (circle one)

  Determining normal probability of wooden dowel

The diameters of a wooden dowel produced by a new machine are normally distributed with a mean of 0.55 inches and a standard deviation of 0.01 inches. What percent of the dowels will have a diameter less than 0.57?

  Testing hypotheses of population mean for food

A food processor is concerned that the 16 oz. can of sliced pineapple is being overfilled. The quality control department took a random sample of 50 cans and found that the arithmatic mean weight was 16.05 oz.

  Probabilility of mistakes when filling a form

Find the probability that student A made no mistakes when entering a randomly selected form. Find the probability that student B made no mistakes when entering a randomly selected form.

  What do confidence intervals represent

What do confidence intervals represent? What is the most controllable method of increasing the precision of or narrowing the confidence interval

  Statistics test paper

Answer the following three questions based on what you know about statistics now.

  Categorical responses between two independent group

The McNemar test is a test on a 2x2 classification table when you want to test the difference between paired proportions. Chi-square test for 2X2 tables compares the tallies or counts of categorical responses between two (or more) independent grou..

  What is the finite population correction

Find out the finite population correction (FPC).With a population size of 1,000 and a planned sample size of 200, what is the finite population correction.

  Give the formula for test statistic and p-type one error

a. What is the probability of a type I error? b. Give the formula for the test statistic.

  The correlation coefficient among two variables is zero

Based on the Correlation following are Multiple choices question. If the correlation coefficient among two variables is equal to zero, what can be said of the variables X and Y.

  Confidence interval for multiple comparisons

Use a 95% confidence interval for multiple comparisons. Show your calculation by hand between Monday and Tuesday. Match your answer with Minitab output. Attach Minitab output.

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