Brenna writes a product of six negative factors. She uses
the following steps to determine that the product of the six
numbers will be positive. Step 3 is missing.
1. Group the factors into pairs.
2. The numbers in each pair have the same sign.
4. The product of three positive numbers is positive.
5. Therefore, the product of the original six factors is
positive.
What is step 3?

A) The product of two numbers with the same sign is positive.

В) The product of two numbers with different signs is
negative.

C) The factors in a product can be grouped in any way
without changing the value of the product.

D) The factors in a product can be written in any order without changing the value of the product

In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000