Using descriptive statistics, you have found out that it takes an average of 40 minutes to complete a mid-term examination in isds 361 a. however, you were surprised to see that the median completion time is 55 minutes. this observation means thata. exam completion time is positively skewedb. exam completion time is negatively skewedc. exam completion time resembles the normal distributiond. exam completion time is probably tri-modal

b. exam completion time is negatively skewed

Step-by-step explanation:

A data distribution is said to be negatively skewed when median value of the distribution is higher than the average value of the distribution.

In this example

thus median > mean, so the mid-term completion time is negatively skewed. Negatively skewed distributions are also called left-skewed.

.24

step-by-step explanation:

the probability is   .24

the first player had the highest probability of getting a silver marble

the game could be made fair by adding back the marble that was drawn after each draw

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3