Standard deviation influences outcome of hypothesis test

Assignment Help Basic Statistics

Reference no: EM1321519

Q1) Test effectiveness of a treatment, a sample of n=25 people is selected from normal population with a mean of μ=60. After treatment is administered to individuals in sample, the sample mean is found to be M = 55.

a) If population standard deviation is σ=10, can you conclude that treatment has significant effect? Use two-tailed test with α = 0.05.

b) If population standard deviation is σ=20, can you conclude that treatment has a significant effect? Use two-tailed test with α = 0.05.

c) Calculate Cohen's d to measure effect size for both tests (σ=20 and σ=10).

d) Briefly explain how the standard deviation influences outcome of hypothesis test. How does σ influence measures of effect size?

Reference no: EM1321519

Questions Cloud

Why does strong mono tonicity implies local non satiation : Elucidate why does strong mono tonicity implies local non satiation but not vice versa

Division algorithm : Divide 16 digit value N by the six digit integer D obtaining the quotient Q and remainder (or sign of remainder) R by the following division algorithms. Describe your steps and method in order to obtain the remainder.

Mini mill steel company estimated the subsequent : The management of the Mini Mill Steel Company estimated the subsequent elasticities for a unique type of steel.

Locating future operations to specific countries : As this will provide the basis for the development of future company facilities, a detailed analysis for these countries is required. Once completed, include recommendations which justify locating future operations to specific countries with littl..

Standard deviation influences outcome of hypothesis test : Briefly explain how the standard deviation influences outcome of hypothesis test. How does σ influence measures of effect size?

Installing the new network : You have been hired as an IT Consultant in order to assist Good Nature food market with developing and implementing the new network. They have hired you to find what type of network they required and to install the network.

Which 2 variables have strongest strength of relationship : Which two variables have the strongest strength of relationship?

P-value for testing ho versus ha : Using the sample information given in the above exercise, the p value for testing Ho versus Ha can be calculated to be 0.0057

Craft unions electricians- carpenters- other possess : The craft unions electricians, carpenters, other possess considerable power to raise wages than do industrial unions automotive workers, steel workers.

User Account

All Pages