10 \
b) +2
6
c)
3
II
-
1-x 25
11
10
12. Rezolvaţi în ecuațiile:
X+1 8
a)
2.
4
1 -3 25
12 4
2-x 5.
e)
26 2
x +6
-2 ;
2
5-x 9
i)
12 4
2x+1
-3
k)
50 5

=
f)
49
I/

h)
1 - 8
3
= -5;
- 5
36
1-15
1)
21-11
1)
-5​

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =