[lipps14006]

perform a 2 sample pooles t-test procedure on the summary statistics for 2 independent samples from 2 populations. If we want to check whether the data provide sufficient evidence to suggest the population means differ. Use the significance level of 1%
sample mean A=143.9 sample mean B=212.9
Sample SD A=43.2 sample SD B=153.7
Sample Size A= 13 sample Size B= 15

[galactus]

Try a hypothesis test for the difference of two means.





Test statistic: -1.6645
Critical Value: +/- 3.0545
p value: .1219

DO NOT REJECT H0

I will leave you write the conclusion. Okey-doke.

[elisheva]

Hi,
I have measured a few variables in the nursing home I'm working in for a study.
I have a few questions about some statistics I need help with:
> 1) Are the results comparing our data (Care) to the national average from the literature statistically significant?
> 2) Can you calculate the p-values for each variable measured?
> 3) What other statistical tests can be used for this data? t-test? ANOVA?
> 4) Which other data do you need from me to do any further tests?
> 5) For longevity, how can the people who are still living for many years be accounted for in the statistics?
>
> Care sample size = 21 for 2009
> Care sample size = 21 for 2010.

> Here are the variables I measured:
> a) hospitalizations (average admissions per person year):
> Care: 0.12 in 2009 and 2010 combined
> Care: 0.14 in 2009 (S.D. 0.36)
> Care: 0.1 in 2010 (S.D. 0.30)
> National Avg: 0.62
>
> b) ER visits (average visits per person year):
> Care: 0.29 in 2009 and 2010 combined
> Care: 0.38 in 2009 (SD 0.49)
> Care: 0.19 in 2010 (SD 0.87)
> National Avg: 0.30
>
> c) ability to feed self:
> Care: 52.4% in 2009 and 2010 combined (SD 0.51)
> National Avg: 40.5%
>
> d) falls (average falls per patient year):
>Care: 0.29 in 2009 and 2010 combined
>Care: 0.38 in 2009 (SD 0.74)
>Care: 0.19 in 2010 (SD 0.51)
> National Avg: 0.36
>
>e) longevity: (mean length of stay until deceased)
> Care: 39.38 months, SD 25.75 months (from 2001-2010)
> National Avg: 13.7 months, SD 18.4
> Note: National Avg: 53% died within 6 months of placement in nursing home
>
>f) mean age of residents in nursing homes
> Care: 85.4 (SD 6.4) in 2009
> Care: 87.3 (SD 6.1) in 2010
> National Avg: 83.3 (SD 9.0)

I would appreciate any help you could give as soon as possible.
Thanks,
Eli