Statistics -- Hypothesis Testing Help

[sandeep169]

Annayalu evarana statistics Guruvulu unara DB lo exam lo oka problem tho stuck ayanu ...plz help evarana mahanubhavulu unte

[puli_keka]

Statistics ante konchem rare

LTT help

[150bryant]

post the question first

[sandeep169]

Question 3

Confidence Interval Estimation AND hypothesis testing for two population parameters

 

A recent study was conducted in New Hampshire to estimate the difference in mean annual contributions for individuals covered by the two plans (TSA or 401(k)). A simple random sample of 15 people from the population of adults who are eligible for a TSA investment was selected. A second sample of 15 people was selected from the population of adults in New Hampshire who have 401(k) plans. The variable of interest is the dollar amount of money invested in the retirement plan during the previous year.

 

TSA - Eligible

401(k) Eligible

n1 = 15

sample mean = $2,119.70

sample stdev. = $709.7

n2 = 15

sample mean = $1,777.70

sample stdev. = $593.90

 

1. Estimate the difference between the mean dollars invested by the TSA- eligible population and the mean dollars invested by the 401(k) eligible population during the past year
2. Test the null and alternative hypotheses using a significance level of 0.05 (Note; you can use any approach you want, either the p-value approach or the critical value approach) SHOW EACH STEP FOLLOWED CLEARLY

[athapurbaba]

Thammudu time undha....nenu repu solve chesi pampistha solution.