The baseball concession stand sells soft pretzels for $4.50 and bags of popcorn for $3.25. a) write an equation to represent the total sales from pretzels and popcorn on a given day. define your variables.
b) if the concession stand sold 137 soft pretzels, how many bags of popcorn would they need to sell to make at least $1,000?

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) =