1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kogti [31]
3 years ago
5

Kayleigh has a spinner with sections labeled A‒E. All sections are the same size. She spins it 20 times with outcomes as follows

:
Outcome Number of Times
A 4
B 4
C 5
D 5
E 2
a) Find the theoretical probability that the spinner lands on A or E. b) Find the experimental probability that the spinner lands on A or E. c) Explain why the probabilities are different.
Mathematics
2 answers:
charle [14.2K]3 years ago
3 0

a) The theoretical probability of landing on A or E is 2/5. This is because there are two sections we want to land on (either A or E) out of 5 sections total.

--------------------------

b) The empirical probability of landing on A or E is 3/10, which was reduced from 6/20. This is because there are 4+2 = 6 times we landed on either A or E out of 20 spins total.

--------------------------

c) Due to the nature of random events, the theoretical and empirical probabilities will not match up perfectly (basically every random experience will be different for each person). This is especially true for small sample sizes. However, as you do more spins, you should find that the empirical probabilities will slowly approach the theoretical probability. The theoretical probability is always going to be 2/5 for this problem; while the empirical probabilities will bounce around because of the nature of random chance.

kifflom [539]3 years ago
3 0
Answer A or E he size spin 20 times than the others
You might be interested in
The time it takes to deliver a pizza (from time of phone call to delivery at door) follows a normal distribution with a mean (µ)
Yuki888 [10]

Answer:

99.87% of the store’s total delivery orders will be delivered to consumers with charge

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 45, \sigma = 5

If a pizza store’s policy is, "Orders delivered within one hour or they’re free!", what percentage of the store’s total delivery orders will be delivered to consumers with charge?

Within one hour, which is 60 minutes. So this is the pvalue of Z when X = 60.

Z = \frac{X - \mu}{\sigma}

Z = \frac{60 - 45}{5}

Z = 3

Z = 3 has a pvalue of 0.9987

99.87% of the store’s total delivery orders will be delivered to consumers with charge

5 0
3 years ago
Write is the equation of the line with a slope of m=-4/3 that passes through the point (12, - 4)
Anika [276]

Answer:

4x +3y=36

Step-by-step explanation:

Equation of line is (y-y1) = m(x-x1)

(y+4) = (-4/3)(x-12)

3(y+4) = (-4)(x-12)

3y +12 = -4x + 48

4x+3y = 36

4 0
3 years ago
80. A certain insect has a mass of 75 milligrams.
pickupchik [31]
Since 1 milligram = 0.001 grams you just have to multiply 75 milligram by 0.001 grams in order to get the grams.
75 x 0.001= 0.075 grams so the answer is F.
6 0
4 years ago
The coeffcient of determination is the ratio of the explained variation to the total variation. A. The coefficient of determinat
liubo4ka [24]

Answer:

D. The coefficient of determination is the ratio of the explained variation to the total variation.

C. The coefficient of determination is the percent of variation of y that is explained by the relationship between x and y

Step-by-step explanation:

The Coefficient of determination is the ratio of the explained variation in y to the total variation in y.

Coefficient of determination, r² ;

r² = explained variation / total variation

The coefficient of determination is the proportion of variation in y (predicted value) which is due to the regression line ; Hence, it is the percent of variation of y that is explained by the relationship between x and y.

3 0
3 years ago
Here's a subtraction problem that has been solved incorrectly.
stealth61 [152]
The answer would be B!
7 0
3 years ago
Other questions:
  • A shark swimming in the ocean sees a passing fish swimming by and accelerates at 2 m/s2 to a speed of 20 m/s to overtake it, doi
    5·1 answer
  • GEOMETRY HELP!!
    8·1 answer
  • Evaluate the following expressions for a=-3 | b=1/2 | c= 3/5 | d=-4.
    7·1 answer
  • By visual inspection, determine the best-fitting regression<br> model for the data plot below.
    12·1 answer
  • Factor 60x−84 using the GCF.
    8·1 answer
  • Evaluate and Solve 6x + 4 &gt; 7
    10·2 answers
  • The function is defined by the following rule.<br> f(x)=2x+4<br> Complete the function table.
    14·2 answers
  • I just really don't understand if someone could please use English or any language that is recognizable to the human race that w
    8·1 answer
  • 2. Bob the plumber charges $15 per hour plus a service fee of $40 for coming out to your house. Which function models this situa
    14·1 answer
  • What is the area of a circular pool with a diameter of 18 feet? Use 3.14 for
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!