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Gennadij [26K]
2 years ago
10

Tyler jade had 3 red hats and 2 blue hats if she picks one hat at random 100 times, estimate how many times she will pick a rev

hat. (First answer with explanation gets brainiest)
Mathematics
1 answer:
Lunna [17]2 years ago
3 0

Answer:

She should expect to draw 60 red hats.

Step-by-step explanation:

Explanation

This must assume that after each draw,  she replaces the hat she drew, otherwise you'd never get to the hundredth draw.

The total number of choices Tyler has is 5. She can draw one of 3 red hats and 1 of 2 blue hats.

The probability of drawing a red hat is 3 in 5

Though you don't need it, the probability of drawing a blue hat is 2/5

Solution

The total number of successful draws = fraction of reds * number of reds

Number red = 3/5 * 100 = 60

Answer

She should draw roughly 60 red hats.

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erma4kov [3.2K]

Answer:

The factory bottles <u>4000 cups of hone</u>y a day.

Step-by-step explanation:

1 gallon = 16 cups

250 gallons = 4000 cups

Hope this helps!

8 0
3 years ago
TRUE OR FALSE: A translation maps each point to its image along a vector called the translation vector
Tomtit [17]

Answer:

True

Step-by-step explanation:

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6 0
2 years ago
The triangle will be dilated by a scale factor of 1.5. (a) Calculate the length of each side of the dilated image. (b) Draw the
VLD [36.1K]
To find the new sides take the original sides and multiply it by the scale factor

12 * 1.5 = 18
10 * 1.5 = 15
14 * 1.5 = 21

So the new sides are 18, 15, 21.  And they correspond to the 12, 10, and 14 respectively

3 0
3 years ago
When a tree was planted, it was 3 ft tall. Since then, it has been growing at a rate of 0.25 ft per year. How long will it take
anzhelika [568]
I think it will be 60 years. 15 divided by 0.25 is 60.
6 0
3 years ago
Assume the random variable X is normally distributed with mean 53 and standard deviation of 6. Find the 9th percentile
satela [25.4K]

Answer:

<em>The 9th percentile of X is 44.96</em>

Step-by-step explanation:

<u>Percentiles for a Normal Distribution</u>

The standard normal distribution can be used for computing percentiles. For example, the median is the 50th percentile being the center value, the first quartile is the 25th percentile, and so on.

To compute percentiles of a normal distribution we can use the formula

X=\mu+z\sigma

Where \mu is the mean, \sigma is the standard deviation of the variable X, and z is the z-score value from the standard tables

The value of X can also be directly obtained from digital tables included in math packages and tools like Excel.

The Excel NORM.INV Function calculates the inverse of the cumulative Normal Distribution Function for a given value of p, \mu and \sigma.

We'll use the values

p=9\%=0.09,\ \mu=53, \ \sigma=6

NORM.INV(0.09,53,6) results in 44.96 which means the 9th percentile of X is 44.96

We could have used the standard normal distribution, which only needs the value of p

NORM.S.INV( 0.09 )=-1.34

That is the value of z, we now apply the formula

X=\mu+z\sigma

X=53+(-1.34)\cdot 6=44.96

We get the very same result as before

6 0
2 years ago
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