Use proof by cases to prove that the sum of two integers is even if they have the same parity.Before showing your solution, assign a variable to the simple propositions.
Use a counterexample to disprove the following statement: "If x is greater than y, then x divided by y is greater than 1 where y ≠ 0.
in a reading ability test, with a sample of 100 cases, the mean score is 40 and
the standard deviation is 4.0. Assuming normality, What is the probability that a score will lie below score 46
Let "\\mu" be a finite measure defined on the Borel "\\sigma"-field of R. Prove that
there exists a unique closed set F such that "\\mu"(F)= "\\mu"(R) and such that if
F1 is any closed set satisfying "\\mu"(F1) = "\\mu"(R),then F"\\subset" F1
The label on a can of pineapple slices that the mean carbohydrate content per serving of canned pineapple is less than 50 grams. It may be assumed that the standard deviation of the carbohydrate content is 4 grams. A random sample of forty servings has a mean carbohydrate content of 52.3 grams. Is the company correct in its claim? Use level of significance 0.05.
True or False. Prove if they are true or false or give a counterexample:
1.Let F be a function of bounded variation on [a,b] such that F'(x) = 0 almost everywhere.
Then F is constant.
2.If f is an analytic function the annulus U = {z E C : 1 < Iz| < 4}, then f has an antiderivative in U
suppose there are four people to tested in covid 19. let P represent positive N represent negative and Z represent the number of infected persons that occur.Find the random variable Z
In a plant nursery, the owner thinks that the length of seedlings in a box sprayed with a new kind of fertilizer has an average height of 26 cm after three days and a standard deviation of 10 cm. One researcher randomly selected 80 such seedlings and calculated the mean height to be 20 cm. Use a=0.05 to test out whether what the plant nursery owner thinks us correct or not.
Show that the additive inverse, or negative, of an even number is an even number using a direct proof
Use a direct proof to show that the sum of two odd integers is even