There are only green counters, yellow counters and red counters in a bag. The ratio of green counters to yellow counters is 7:11. Ismael takes a counter at random from the bag.
The probability that the counter is red is 0.25.
Work out the probability that Ismael takes a green counter.
(Please help me out, I’ll give the brainliest answer).

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) =