Write each percent increase or decrease as a percentage of the initial amount. The firs a. This year, there was 40% more snow than last year. 140%
%
b. This year, there were 25% fewer sunny days than last year.
%
C. Compared to last month, there was a 50% increase in homes sold.
d. The runners time in this race was 10% less than last race.
%
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Math

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) =