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Inessa [10]
3 years ago
12

A statistics teacher fills a large container with 1000 white and 3000 red beads and then mixes the beads thoroughly. She then ha

s her students take repeated SRS of 50 beads from the container. After many SRSs, the values of the sample proportion of red beads are approximated well by a Normal distribution with a mean of 0.75 and standard deviation of 0.06.
(a) What is the population? Describe the population distribution.
(b) Describe the sampling distribution of p^. How is it different from the population distribution?

Mathematics
1 answer:
irina [24]3 years ago
5 0

Answer:

I’m sorry but I’m not much help. I usually don’t answer questions I don’t know about, but I can do one thing.

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A circular pool if filling with water. Assuming the water level will be 4' deep and the diameter is 20' , what is the volume of
Yuliya22 [10]

35,569.92 L of water is required to fill the pool

Step-by-step explanation:

  • Step 1: Find the area of the circular pool when radius = 20/2 = 10 ft

⇒ Area = πr² = 3.14 × 10² = 314 ft²

  • Step 2: Find the volume of the pool

Volume = Area × Depth

             = 314 × 4 = 1256 ft³

  • Step 3: Convert the volume into liters.

Volume of water = 1256 × 28.32 = 35,569.92 L (∵1 ft³ = 28.32 L)

8 0
3 years ago
Sally is interested in taking a job in a city in which she's not familiar with the cost of living. She is especially concerned a
Salsk061 [2.6K]

Answer:

a. Mean

Step-by-step explanation:

We have been given that the Sally is interested in taking a job in a city in which she's not familiar with the cost of living. She is especially concerned about the cost of housing and is interested in the average cost of a three bedroom home.

We know that in a normal distribution all central tendencies (mean, mode, median) are equal.

When a very large or very small valued data point is added to data set, mean is mostly affected by that outlier.

We know that mode of a data set is the point that appears at-most in the data set, so outliers doesn't affect mode.

Median of a data set is less affected by outliers.

The price of the three bedroom homes owned by millionaires will be greater than prices of houses owned by people in the neighborhood.

Therefore, mean will be most influenced by three bedroom homes owned by millionaires.

7 0
3 years ago
Hello help pls :3333333 I only need the answer to part B which asks about the mean
statuscvo [17]

Answer:9

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help A and B plz
Elden [556K]
Perimeter= length+length+width+width
Area=length×width
And then substitute..
6 0
3 years ago
Read 2 more answers
a. Determine all bijections from the {1,2,3} into {a,b,c}. b. Determine all bijections from {1, 2, 3} into {a,b,c,d}.
avanturin [10]

Part A

There are 6 bijections from {1,2,3} to {a,b,c}. This is effectively the same as asking the question "how many ways are there to arrange {a,b,c} where order matters?" We use a factorial to answer this question.

3 factorial = 3! = 3*2*1 = 6

You can also use a permutation, which is composed of factorials, to get the same answer.

======================================================

Part B

There are no bijections from {1,2,3} to {a,b,c,d}. Why is this? Because a bijection has two properties: it must be one-to-one, and it must be onto. The term "onto" in mathematics means "every value in the range is targeted". In the case of the range {a,b,c,d} it is not possible for each value to show up. This is because there are only three items in the domain {1,2,3}. You'll always be one letter short.

As you can probably guess, a bijection is only possible if and only if n(D) = n(R), where D and R are the domain and range respectively. The notation n(D) represents the count or number of items in set D.

3 0
3 years ago
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