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

  F-­test for comparing the three or more means

Which of the following assumptions is not made for the F-­test for comparing three or more means?

  Find the probability - mean starting salary

What is the probability that the mean starting salary is between $31,000 and $33,000 - Graduates from a graphic arts course at a community college have a mean starting salary

  Fitting of orthogonal polynomial regression model

What conclusions can you draw about the nature of the relationship between anxiety and exam performance?

  Maximizing andre probability

To maximize Andre's probability of landing on the net, how far away from the cannon should he position the nearest edge of the net?

  Create indicated confidence interval for population mean

Create the indicated confidence interval for population mean using (a) t-distribution. (b) If you had incorrectly used normal distribution, which interval would be wider?

  Describing difference in variances

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

  Determining mean-median and mode for data set

Determine the mean, median, and mode for data set: 12.75, 18.32, 19.41, 12.75, 18.30, 19.45, 19.33

  Results of a district spelling bee for both girls and boys

The results of a district spelling bee for both girls and boys are normally distributed. the 60 girls have a mean score of 71 with a standard deviation of 6, while the 50 boys have a mean score of 66 points with standard deviation of 5 points.

  Greater variance than the desired one

A random sample of 25 injections resulted in a variance of 0.135  test if the apparatus has a greater variance than the desired one.

  To find the 95 percent confidence interval for mean

A small New England college has a total of 400 students.The Math SAT is required for admission, and the mean score of all 400 students is 620. The population standard deviation is found to be 60. The formula for a 95% confidence interval yields th..

  Two-sided test and significance level

The expected peak expiratory flow rate in adults is 300 with a standard deviation of 50. how many subjects should be enrolled to ensure 80% power to detect a difference of 15 liters per minute with a two-sided test and significance level of 0.05?

  Description of population means

Fairfield homes is developing two parcels near Pigeon Fork, Tenn. In order to test different advertising approaches, they use different media to reach potential buyers.

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