Alexis is knitting a blanket 4 meters long. Every 2 decimeters, she changes the color of the yarn to make stripes. How many stripes will the blanket have? Complete the explanation. She changes the color of the yarn every 2 decimeters and there are decimeters in 4 meters. Since 2 decimeters × equals the blanket length, the blanket will have stripes.

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) =