Hazel has 15 t-shirts and 10 short sleeve blouses in her wardrobe. what is the relative frequency of her T-shirts? write your answer in decimal form.
To find the relative frequency of Hazel's T-shirts, we first need to calculate the total number of tops she has:
Total tops = 15 t-shirts + 10 short sleeve blouses = 25
Now, we can calculate the relative frequency of T-shirts by dividing the number of T-shirts by the total number of tops:
Relative frequency of T-shirts = 15 / 25 = 0.6
So, the relative frequency of Hazel's T-shirts is 0.6.
a color wheel with six equal sections, blue, green, yellow, black, and white, was spun 150 times. the results are summarized in the table.
blue- 20
red- 15
green- 45
yellow- 10
black- 15
white- 45
what is the expirement probability of landing on white? express your answer in percent form
To find the experimental probability of landing on white when spinning the color wheel, we need to divide the number of times white has been landed on by the total number of spins.
Total number of spins = 150
Number of times white was landed on = 45
Experimental probability of landing on white = 45 / 150 = 0.3
To express this as a percentage, we need to multiply by 100:
0.3 * 100 = 30%
Therefore, the experimental probability of landing on white is 30%.
a six-sided number cube is to be rolled 30 times. how many do you expect to roll on an even number?
Since a six-sided number cube has 6 sides, half of the sides will have even numbers (2, 4, 6) and half will have odd numbers (1, 3, 5).
To find the expected number of times an even number will be rolled in 30 rolls, we can calculate the probability of rolling an even number and then multiply it by the total number of rolls.
Probability of rolling an even number = 1/2
Expected number of even numbers rolled = Probability of rolling an even number x Total number of rolls
Expected number of even numbers rolled = 1/2 x 30 = 15
Therefore, you can expect to roll an even number 15 times out of 30 rolls.
a survey was conducted with 150 respondents that asked about their favorite activities during winter. there are 30 people who favored building a snowman, 80 people was liked skiing, and 40 who preferred sledding. what is the experimental probability that someones favorite activity is sledding? write you r answer in the simplest form of fraction
The experimental probability of someone's favorite winter activity being sledding can be calculated by dividing the number of people who preferred sledding by the total number of respondents.
Number of people who prefer sledding = 40
Total number of respondents = 150
Experimental probability of their favorite winter activity being sledding = 40 / 150
To simplify this fraction, we can divide both the numerator and denominator by the greatest common divisor, which is 10:
40 ÷ 10 = 4
150 ÷ 10 = 15
Therefore, the experimental probability of someone's favorite winter activity being sledding is 4/15.