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likoan [24]
3 years ago
12

Which of the following statements is false?

Mathematics
1 answer:
barxatty [35]3 years ago
3 0
A is false, therefore the correct answer
You might be interested in
You and your mom enter a drawing with 3 different prizes. A total of 9 people entered the drawing, and prizes are awarded random
julsineya [31]

Answer:

\frac{1}{72}

Step-by-step explanation:

We have been given that there are total 9 people who entered the drawing competition. There are 3 prizes to be distributed to the winners. The total number of ways that 3 prizes can be awarded to the 9 people can be determined as 9*8*7 = 504.

The total number of ways in which I win the first prize and my mom wins the second prize would be 1*1*7 = 7.

Therefore, the probability that I win the first prize and my mom wins the second prize would be: \frac{7}{504}=\frac{1}{72}

5 0
3 years ago
Read 2 more answers
Negative seven plus four
gulaghasi [49]

Answer:

-3

Step-by-step explanation:

it like 7-4 but then you change the sign to negative since you chance it earlier.

8 0
3 years ago
What is a theoretical and Experimental Probability?
aniked [119]

Answer:

See below...

Step-by-step explanation:

Theoretical probability is the probability that something should happen based on the beginning conditions.  Such as having a jar of 30 marbles with 5 being blue.  The probability of pulling out a blue marble when selecting 1 marble is

5/30, or 1/6.  Theoretically you should pull one blue marble out every 6 times you pull a marble out.  

This isn't guaranteed to happen though, that's where experimental probability comes form.

Experimental probability is the number of desired outcomes achieved, divided by the total number of outcomes.  This is based on what actually happened.  Say you selected a marble, and put it back 10 times, recording the color each time and you got 2 blue marbles.  Your experimental probability is

2/10, or 1/5, which doesn't match the theoretical probability.  The more times this experiment is conducted, the closer your result will be to the theoretical probability

8 0
3 years ago
You scored an 85 on a test. This corresponds to a z-score of 1.80. What percentage of the scores are better than yours?
Scrat [10]

At a z-score of 1.80, the percentage of the scores that are better than yours is equal to 3.59%.

<h3>What is a z-score?</h3>

In Mathematics, a z-score is sometimes referred to as a z-value or standard score and it can be defined as a measure of the distance between a raw score and the mean, when standard deviation units are used.

<h3>How to determine the percentage?</h3>

Mathematically, the z-score of a given sample score in a normal distribution can be calculated by using this formula:

Z-score = (x - μ)/σ

Where:

  • x represents the sample score.
  • σ represents the standard deviation.
  • μ represents the mean score.

Since a score of 85 on a test corresponds to a z-score of 1.80, the percentage of the scores that are better than yours is given by:

P(x > 85) = P(z > 1.80)

P(z > 1.80) = 0.0359

P(z > 1.80) = 3.59%.

Read more on z-scores here: brainly.com/question/26714379

#SPJ1

5 0
1 year ago
Twenty-four students tried out for the cheerleading squad. Only 5/6 of the
IceJOKER [234]

Step-by-step explanation:

Total no. of students tried out for the cheerleading squad = 24

Only 5/6 of the students will be chosen, therefore, no.s of students will be chosen for the squad =

\frac{5}{6}  \times 24

= 5 \times 4 = 20students

6 0
3 years ago
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