Question

In a survey there are 120 participants, 80 are from group A, and 21 are in both (A and B). How many participants are in B group?

Answer #1

Here we have given n(AUB) = 120 ACA) = 80 A DCA OB) = 21 & we have to calculate n (B) = ? we know that A(AUB) = n(A) + n(B) - DCAMB) 120 80+ n(o)-21 120-80 = n(B)- 21 120-80 = n(B)-21 40+21= n(B) | n(B) = 61participants are in group B :

Here we have given In(AUB)= 1201 n(A) = 80 NCAAB) = 21 & we have to calculate 2(B) = ? we know that n (AUB) = n(A) + n(B) = n(ADB) 120 - 80+ n(B)- 2) 120- 80= n(B) - 21 40 = n(B) - 25 40+21= n(B) (B) = 6 61 participants are in group B

In a 2 x 2 x 3 design with 120 participants equally distributed
across the conditions.
How many participants are in each cell ( show how you get this
calculation)?

It's believed that as many as 21% of adults over 50 never
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non-grads to within 6% with 90% confidence?

A survey commissioned by a health care group reported that 21%
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week. The data were obtained by an online survey of 2,009 randomly
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(a) What number of survey respondents reported that they consume
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to the nearest whole number.)
422
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I gave a group of participants a survey, asking what
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In SPSS, I labeled 1=caucasian, 2=african american, 3=hispanic,
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The participant answered: mixed/caucasian. Would I label them as
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ethnicity? They said mixed rather than saying caucasian/african
american or something like that; which they would then be assigned
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I have a three-group study that uses a one way ANOVA. Each group
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1. how many degrees of freedom does the omnibus F test have?
2. suppose prior to data collection I have stated two hypotheses
backed by previous studies: (1) group a will score higher than
group s B and C combined. and (2) group B will score higher than
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6) Approximately how many research participants would be
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