Answer:
Die= 6 possible outcomes
spinner= 4 possible outcomes
word= 4 possible outcomes
alphabet= 26 possible outcomes
cards= 15 possible outcomes
Answer:
2
Step-by-step explanation:
x+12+12-9+7 = 24
x+22 = 24
x = 2
Solution: Yes, the random variable y will have a binomial distribution. Because there are two possible outcomes 1. number of days of rain and 2. number of days of no rain.
The parameters of binomial distribution are
and 
The parameter n is given as the number of day's under consideration.

The parameter p is not given, but it can be estimated by number of days it rained divided by the total number of days under consideration.

Answer:
a) 62
b) 31/45
Step-by-step explanation:
a) The table tells you there are 42 males, and 20 more females that study biology.
42 +20 = 62 . . . are male or study biology or both
__
b) Of the total of 90 people, 62 are male or study biology (or both). The probability that any person is in that category is ...
62/90 = 31/45 = P(male or biology)
Answer is underlined
BD: 16.8+50.4= <u>67.2 mm</u>
LM: 4-2.6= <u>1.4 cm</u>