1 ) Ten randomly selected people took an IQ test A, and next day they took a very similar IQ test B. Their scores are shown in the table below.

Readers are expected to understand this to mean, for example, the 65 women in the first study hadx¯ = 15433 and s = 7554.

It is commonly thought that women talk more than men. Does either of the two samples support this idea? For each study:

(a) What degrees of freedom does Option 2 use to get a conservative P-value?

Study 1:  Study 2: 

(b) Compare your value of t with the critical values in Table C. What can you say about the P- value of the test? Study 1: P- value >  ____Study 2:  __≤ P- value ≤ __

4) Test the given claim using the =0.01 significance level and assuming that the populations are normally distributed. Claim: The treatment population and the placebo population have the same mean. Treatment group: =6, ¯=136, =6.3. Placebo group: =11, ¯=146, =6.1.

(a) The negative critical value is_____ .

(b)The positive critical value is _____ .

1 ) Ten randomly selected people took an IQ test A, and next day they took a very similar IQ test B. Their scores are shownPersonTest ATest Bdif A1161160 B103105-2 C104109-5 D112117...