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Hunter-Best [27]
3 years ago
11

The Museum of Science in Boston has an exhibit in which metal balls drop down a chute, bounce around, and wind up in one of 21 b

ins. After 1000 balls have dropped, the heights within the bins clearly follow a bell-shaped curve. If the standard deviation is 3 bins, approximately how many balls are in bins 1 through 7?
A) 100
B) 160
C) 50
C) 330
Mathematics
2 answers:
Papessa [141]3 years ago
6 0
A.100 so make sure you put your answer
Travka [436]3 years ago
5 0
<span>if you have 21 bins then the 'middle bin' is bin 11 (starting at 1) So the 'mean' of this distribution is 11. The SD is 3 so using the above calculator (or your own tables ) you get that the probability of a ball being in bin 7 or less is .091

A is you answer

</span>
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Henry collected data on the favorite type of food of the students of two grades. The table below shows the relative frequencies
Firdavs [7]
The correct answer would be C) because 0.40 is 40% of 1.00.
4 0
3 years ago
Read 2 more answers
You pull a Queen (any of 4 suits) out of 52-card deck. I pull a pair of grey socks from the 12 -pair pack. There are 3 pairs of
nignag [31]

Answer: The probability of pulling a Queen has a smaller chance of happening.

Step-by-step explanation: In a 52-card deck, you have 4 Queens altogether belonging to each of the four suits. If you pull a card at random out of a complete pack, the probability of picking a Queen would be as follows;

P(Q) = Number of required outcomes/Number of all possible outcomes

P(Q) = 4/52

P(Q) = 1/13

P(Q) = 0.07692 or 7.69%

Also in a 12-pair pack of socks, you have 3 pairs with the color grey. The probability of picking a pair of grey socks at random is given as follows;

P(G) = Number of required outcomes/Number of all possible outcomes

P(G) = 3/12

P(G) = 1/4

P(G) = 0.25 or 25%

Therefore the probability of pulling a Queen has a 7.69% chance of happening and thats a lower chance.

4 0
3 years ago
Tanya tiene un jardin con un foso alrededor. El jaidim el un rectangulo de 2 1/2m de largo y 2m de ancho. El jardin y el foso ju
professor190 [17]

Answer:

El área del foso es 5.5 m²

Step-by-step explanation:

Hola!

Por favor, mira el esquema adjunto para una descripción del problema.

Viendo la figura, podemos deducir que el área del foso será igual al área del rectángulo formado por el jardín y el foso menos el área del jardín.

Área del foso = área del foso y jardín - área del jardín.

El área de un rectángulo se calcula multiplicando la longitud de la base por la altura:

Área del jardín = 2.5 m · 2 m = 5 m²

Área del rectángulo jardín - foso = 3.5 m · 3 m = 10.5 m²

Área del foso = 10.5 m² - 5 m² = 5.5 m²

El área del foso es 5.5 m²

4 0
3 years ago
Please help me with this question
Basile [38]
Both graph are related because the y intercept is two and x is one but they have the same shape and y=x is 0 so the x intercept of the second graph is 2 so your answer is the middle one
7 0
4 years ago
What is the difference between -1.84 and -(4.25)
mrs_skeptik [129]

Answer:

2.41

Step-by-step explanation:

4 0
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