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Fittoniya [83]
3 years ago
12

A bag contains 20 marvels of the same size for blue green and red the probability of picking a blue marbles 20% probability of p

icking a green marble 50% determine the probability of picking a red marble from the bag and then classify the probability of picking a red marble is likely or not likely to occur
Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0

Answer:

30% chance of picking a red marble

Step-by-step explanation:

since 70% of the bag is filled with blue or green marbles the rest of the bag (100-70=30) is the percent of red marbles.

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What are the first and last deciles of the standard Normal distribution?
aliya0001 [1]

My best Guess is

1.282 for upper . , -1.282 for lower.

Hope this Helps

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5 0
3 years ago
All employees at three stores of a large retail chain were asked to fill out a survey.a. Is it random b. Systematic c. Stratifie
aleksandrvk [35]

Answer:

d. Cluster

Step-by-step explanation:

Random: Random is asking a group of people from a population. For example, to estimate the proportion of Buffalo residents who are Bills fans, you ask 100 Buffalo residents and estimate to the entire population.

Systematic: Similar to random. For example, you want to estimate something about a population, and your sample is every 5th people you see on the street.

Cluster:Divides the population into groups, with geographic characteristics.. Each element is the groups is used. Suppose you want to study the voting choices of Buffalo Bills players. You can divide into offense, defense and special teams, and ask each player of these 3 groups.

Stratified: Done on a group of clusters, that is, from each cluster(group), a number of people are selected.

In this problem, we have that:

All employees at three stores of a large retail chain were asked to fill out a survey.

Divided by clusters(stores).

So the orrect answer is:

d. Cluster

5 0
3 years ago
The pipe fitting industry had 546.5 thousand jobs in 2015 and is expected to decline at an average rate of 3 thousand jobs per y
lesya692 [45]

Answer:

The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.

Step-by-step explanation:

Due to the assumption of a yearly average rate, a linear function model shall be used. The expected amount of jobs (n) after a certain amount of years (t) is given by the following formula:

n = n_{o} + \frac{\Delta n}{\Delta t}\cdot t

Where:

n_{o} - Initial amount of jobs in pipe fitting industry, measured in thousands.

\frac{\Delta n}{\Delta t} - Average yearly rate, measured in thousands per year. (A decline is indicated by a negative sign)

If n_{o} = 546.5, t = 2025-2015 = 10\,years and \frac{\Delta n}{\Delta t} = -3\,\frac{1}{years}, then:

n = 546.5+\left(-3\,\frac{1}{year}\right)\cdot (10\,years)

n = 516.5

The percent change in jobs from pipe fitting industry is calculated as follows:

\%n = \left(1-\frac{n}{n_{o}}\right)\times 100\,\%

\% n = \left(1-\frac{516.5}{546.5}\right)\times 100\,\%

\%n = 5.5\,\%

The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.

4 0
3 years ago
What points are coplanar??
elena-14-01-66 [18.8K]

Coplanar means that points lie in the same plane. Since A, E, and D all lie on the back wall, they are coplanar.

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3 years ago
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Answer:

s

Step-by-step explanation:

7 0
2 years ago
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