P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% =...
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Transcript of P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% =...
![Page 1: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/1.jpg)
P.O.D. #1
Convert ⅝ to a decimal and to a percent.
Decimal: 5 ÷ 8 = 0.625
Percent: 0.625 100% = 62.5%
Determine the value of t.
1419
= t95
14 95 = 19 t 1330 = 19t ÷19 ÷19
70 = t
basic advanced
![Page 2: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/2.jpg)
Probability of Simple Events
The probability of an event is a ratio that compares the number of favorable outcomes to the number of possible outcomes.
![Page 3: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/3.jpg)
0 1½ ¾¼
Impossible UnlikelyAs likely to
happen as not Likely Certain
0 0.25 0.5 0.75 1
0% 25% 50% 75% 100%
Fraction:
Decimal:
Percent:
The probability of a chance event is a number between 0 and 1.
![Page 4: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/4.jpg)
P(event) = Number of favorable outcomesNumber of possible outcomesExample:You roll a number cube. What is the probability of rolling an odd number?
P(odd) =36 =
12
![Page 5: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/5.jpg)
Example:
The probability that you draw a short straw out of a group of 40 straws is 3/20. How many straws are short?
320
x40=
3 40 = 20 x 120 = 20x ÷20 ÷20
6 = x
Set up a proportion:
Cross multiply:
Solve for variable:
Six out of the 40 straws are short.
![Page 6: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/6.jpg)
Complementary events are two events in which either one or the other must happen, but they cannot happen at the same time.
![Page 7: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/7.jpg)
Example:
The probability of not rolling a 4 and the probability of rolling a 4 are complementary.
P(4) + P(not 4) = ?
16
+ 56
= 1
The sum of the probability of an event and its complement is 1 or 100%.
![Page 8: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/8.jpg)
Whiteboard:
You randomly choose one hat from 3 green hats, 4 black hats, and 2 white hats. What is the probability that you will choose a green hat?
P(green) =39 =
13
Decimal: 0.33
Percent: 33%
![Page 9: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/9.jpg)
Whiteboard:
Miss Bush surveyed her class and discovered that 70% of her students own a cellphone. Find the probability that a student does not own a cellphone.
P(phone) + P(not phone) = 100%
70% + P(not phone) = 100%
-70% -70%
P(not phone) = 30%
![Page 10: P.O.D. #1 Convert ⅝ to a decimal and to a percent. Decimal: 5 ÷ 8 = 0.625 Percent: 0.625 100% = 62.5% Determine the value of t. 14 19 = t 95 14 95.](https://reader030.fdocuments.us/reader030/viewer/2022032611/56649e7b5503460f94b7bc81/html5/thumbnails/10.jpg)
Whiteboard:
Miss Bush surveyed her class and discovered that 70% of her students own a cellphone. If there are 20 students in her class, how many own cellphones?
70100
x20=
70 20 = 100 x 1400 = 100x ÷100 ÷100
14 = x