Billy’s exercise ball contains 0.523 m3 of air. What is the radius of the exercise ball? Use 3.14 for π and round your answer to the nearest tenth of a meter.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay

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) =