Identify the lower class limits, upper class limits, class width, class midpoints, and class boundaries for the given frequency distribution. also identify the number of individuals included in the summary. age (yr) when award was won frequency 25 -29 31 30 -34 35 35 -39 15 40 -44 2 45 -49 4 50 -54 2 55 -59 2

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) =

Wo competing gyms each offer childcare while paretnts work out. gym a charges $9.00 per hour of childcare. gym b charges $0.75 per 5 minutes of childcare. which comparison of the childcare costs is accurate? gym b charges $1.05 less per hour than gym a. gym b charges $1.50 less per hour than gym a. gym b charges $5.25 less per hour than gym a. gym b and gym a charge the same hourly rate for childcare.

On one day a rickshaw puller earned $80. out of his earnings he spent $68/5 on tea and snacks, $51/2 on food and $22/5 on repairs of the rickshaw. how much did he save on that day? what would be a equation that would represent this problem?