What is the two-tail p-value the prtesti command

Assignment Help Basic Statistics

Reference no: EM133181731

Question 1:

A cross sectional study was carried out at a busy tuberculosis clinic in a high prevalence district. The aim of the study was to see if older people with tuberculosis were as likely as younger people to be tested for HIV. The study revealed the following situation:

Was HIV testing done?
		Yes	No
Aged over 50?	Yes	80	20	100
Aged over 50?	No	270	30	300

Which ONE of the following four statements is correct?

Only a p-value is produced with prtest
Both a p-value and a 95% CI are produced with the chi square test
Both a p-value and a 95% CI are produced with prtest
Only a 95% CI is produced with a chi square test

Question 2:
A cross sectional study was carried out at a busy tuberculosis clinic in a high prevalence district. The aim of the study was to see if older people with tuberculosis were as likely as younger people to be tested for HIV. The study revealed the following situation:

Was HIV testing done?
		Yes	No
Aged over 50?	Yes	80	20	100
Aged over 50?	No	270	30	300

Submit your answer. With the HIV testing data in this scenario, what is the two-tail p-value following the prtesti command?
0.0044
0.0088
0.0090
0.9956

Question 3:
A cross sectional study was carried out at a busy tuberculosis clinic in a high prevalence district. The aim of the study was to see if older people with tuberculosis were as likely as younger people to be tested for HIV. The study revealed the following situation:

Was HIV testing done?
		Yes	No
Aged over 50?	Yes	80	20	100
Aged over 50?	No	270	30	300

Submit your answer. Which ONE of the following statements about the 95% CI for the difference between the two proportions is correct?
The difference between the population proportions is unlikely to be of much concern
The CI illustrates that there may actually be no difference other than due to sampling error
The difference between the proportions is 2.62%
The difference between the population proportions may be as large as 18%

Reference no: EM133181731

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