A mathematics test of 100 multiple- choice questions is to be given to all freshmen enetring a large university. Initially, in a pilot study the test was given to a random sample of 20 freshmen. Suppose that, for the population of all entering freshmen, the distribution of the number of correct answers would be normal with a variance of 250. A. what is the probability that sample variance would be less than 100? B. what is the probability that sample variance would be more than 500.

step-by-step explan mxfcg'k; uafwgzfgjhklhgation:

the answer is b.)

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if farmer matt works for 8 hours a day, how many days will it take him to completely plant 12 rows of crops? each batch of cookies needs 3/4 cups of sugar.

step-by-step explanation:

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day