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worty
8 days ago
6

Roll 1 Die 1000 times by pressing the "Roll 100 Sets" button ten times. Then do the same for Roll 3 Dice and Roll 12 Dice. Which

best describes the sampling distributions? All three sampling distributions appear to follow the normal distribution. From left to right, the sampling distributions begin normal but then become non-normal. From left to right, the sampling distributions begin non-normal but then become more normal. All three sampling distributions appear to follow non-normal distributions.
Mathematics
2 answers:
Zina [12.3K]8 days ago
8 0

Answer:

Initially, the sampling distributions are not normal when viewed from left to right, but they ultimately trend towards normality.

Step-by-step explanation:

Referring to the prompt, we see that:

Roll 1 Die 1000 times by hitting the "Roll 100 Sets" button a total of ten times.

This process is mirrored for rolling 3 Dice and rolling 12 Dice

namely

Roll 3 Dice 1000 times by clicking the "Roll 100 Sets" button ten times.

Roll 12 Dice 1000 times by clicking the "Roll 100 Sets" button ten times.

According to the Central Limit Theorem (CLT), as the sample size increases, the sampling distribution of the mean tends to form a normal distribution.

Now, if one rolls 1 Die 1000 times where each sample comprises 100 observations.

When rolling 3 Dice in the same manner; we accumulate 3 × 100

When rolling 12 Dice similarly; we accumulate 12 × 100

This generally suggests that the sample size is increasing, leading the initially non-normal sampling distribution to become more normal over time.

Inessa [12.5K]8 days ago
6 0

Answer:

each of the three sampling distributions seems to adhere to a normal distribution

Step-by-step explanation:

Sampling distributions conform to a normal distribution.

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A department store sells logo shirts at an original price of $20. Every month that a shirt doesn’t sell, the store reduces the s
Inessa [12570]

Answer: Macy's pre-tax shirt price is $5.63

Step-by-step explanation:

Details:

Original cost = 20

sale price drops by 25% every month it remains unsold.


First markdown month:

20 * (100%-25%) = 20 * 75% = 15


Second markdown month:

15 * 75% = 11.25


Macy, being an employee, enjoys a 50% discount on the current price.

11.25 * 50% = 5.625

11.25 - 5.625 = 5.625 or rounded to 5.63

Hope this helps!:)

3 0
1 month ago
Read 2 more answers
What is the empirical formula of an oxide of chromium that is 48 percent oxygen by mass?
Svet_ta [12734]

Answer:

CrO₃.

Step-by-step explanation:

First, we will find the chromium percentage in the oxide by using the following process:

Oxygen (O) = 48%

Chromium (Cr) =?

The oxide consists solely of chromium and oxygen, and its chromium percentage is calculated as:

Cr = 100 – percentage of oxygen

Cr = 100 – 48

Cr = 52%

Next, we will determine the empirical formula for the oxide:

Chromium (Cr) = 52%

Oxygen (O) = 48%

Now, we divide by their molar mass:

Cr = 52/52 = 1

O = 48/16 = 3

Now, divide by the lowest value:

Cr = 1/1 = 1

O = 3/1 = 3

Thus, the empirical formula for the oxide is CrO₃.

4 0
1 month ago
A rectangular schoolyard is to be fenced in using the wall of the school for one side and 150
lawyer [12517]

Answer:

Part 1) The equation is A(x)=150x-2x^2

Part 2) When x=40 m, the area of the schoolyard is A=2,800 m^2

Part 3) The valid domain consists of all real numbers exceeding zero and below 75 meters

Step-by-step explanation:

Part 1) Formulate an expression for A(x)

Let

x -----> the length of the rectangular school yard

y ---> the width of the rectangular school yard

It is known that

The perimeter for the fencing (taking the school wall as one side) is

P=2x+y

P=150\ m

thus

150=2x+y

y=150-2x -----> this is equation A

The area of the rectangular school yard is

A=xy ----> this is equation B

Substituting equation A into equation B yields

A=x(150-2x)

A=150x-2x^2

Change to function notation

A(x)=150x-2x^2

Part 2) What is the area when x=40?

With x equal to 40 m

substitute the value into the expression from Part 1 to determine A

A(40)=150(40)-2(40^2)

A(40)=2,800\ m^2    

Part 3) What would be a suitable domain for A(x) in this scenario?

We understand that

A signifies the area of the rectangular school yard

x characterizes the length of the rectangular school yard

It follows that

A(x)=150x-2x^2

This forms a vertical parabola opening downwards

The vertex indicates a maximum point

The x-coordinate of the vertex corresponds to the length that maximizes the area

The y-coordinate of the vertex denotes the maximum area

The vertex corresponds to (37.5, 2812.5)

Refer to the accompanying figure

Consequently,

The peak area achieved is 2,812.5 m^2

The x-intercepts are located at x=0 m and x=75 m

The domain for A is the range -----> (0, 75)

All real numbers greater than zero and less than 75 meters

5 0
1 month ago
Tim answered all the questions on his math test but got 101010 answers wrong. He received 444 points for every correct answer, a
zzz [12365]
A)
4(q - 10) = 76..... Tim earned 4 points for each correct answer, totaling 76 points. He got 10 answers right less than the total number of questions on the test.

b)
q = 10 + 76/4
q = 29

Thus, the overall number of questions on Tim's math test amounted to 29.
4 0
1 month ago
Read 2 more answers
Of the 1,000 students in a local college, 420 own brand X mobile phones and 580 own brand Y mobile phones. Of these students, 80
Inessa [12570]
P(X \ Y) = P(X ∩ Y)/P(Y)
P(X ∩ Y) = 80/1000 = 0.08
P(Y) = 580/1000 = 0.58

P(X \ Y) = 0.08/0.58 = 8/58 = 4/29
8 0
1 month ago
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