Mary worked from Monday to Saturday last week and bought lunch in the company’s restaurant every day. Her lunches cost a different amount every day. Each lunch cost a multiple of 20¢. The most expensive lunch of the week cost $7.60 and the cheapest one cost $4.40. Friday’s lunch cost exactly 1 1/2 times as much as Wednesday’s lunch. Tuesday’s lunch cost $1.20 more than Thursday’s lunch.(a) What is the minimum total that Mary’s six lunches last week could have cost? What is the maximum total that Mary’s six lunches last week could have cost?

The valve seat performs two functions: it provides a seal for the valve in the combustion chamber, and it provides a cool surface to carry heat away from the valve. most valves use a seating angle.

On a certain portion of an experiment, a statistical test result yielded a p-value of 0.18. what can you conclude? 2(0.18) = 0.36 < 0.5; the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 18% of the time, so the test is not statistically significant. if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 82% of the time, so the test is not statistically significant. 0.18 > 0.05; the test is statistically significant. p = 1 - 0.18 = 0.82 > 0.05; the test is statistically significant.

What are your academic resolutions for 2019? what plans do you have to yourself accomplish those goals?