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slamgirl [31]
3 years ago
15

The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean o

f 3.2 pounds and standard deviation of 0.8 pound. if a sample of 16 fish is taken, what would the standard error of the mean weight equal? select one:
Mathematics
1 answer:
Elis [28]3 years ago
5 0
<span>mean of 3.2 pounds and standard deviation of 0.8 pound</span>
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Orange M&amp;M’s: The M&amp;M’s web site says that 20% of milk chocolate M&amp;M’s are orange. Let’s assume this is true and set
SOVA2 [1]

Answer:

The correct option is (A).

Step-by-step explanation:

Let <em>X</em> = number of orange  milk chocolate M&M’s.

The proportion of orange milk chocolate M&M’s is, <em>p</em> = 0.20.

The number of candies in a small bag of milk chocolate M&M’s is, <em>n</em> = 55.

The event of an milk chocolate M&M being orange is independent of the other candies.

The random variable <em>X</em> follows a Binomial distribution with parameter <em>n</em> = 55 and <em>p</em> = 0.20.

The expected value of a Binomial random variable is:

E(X)=np

Compute the expected number of orange  milk chocolate M&M’s in a bag of 55 candies as follows:

E(X)=np

         =55\times 0.20\\=11

It is provided that in a randomly selected bag of milk chocolate M&M's there were 14 orange ones, i.e. the proportion of orange milk chocolate M&M's in a random bag was 25.5%.

This proportion is not surprising.

This is because the average number of orange milk chocolate M&M’s in a bag of 55 candies is expected to be 11. So, if a bag has 14 orange milk chocolate M&M’s it is not unusual at all.

All unusual events have a very low probability, i.e. less than 0.05.

Compute the probability of P (X ≥ 14) as follows:

P(X\geq 14)=\sum\limits^{55}_{x=14}{{55\choose x}0.20^{x}(1-0.20)^{55-x}}

                 =0.1968

The probability of having 14 or more orange candies in a bag of milk chocolate M&M’s is 0.1968.

This probability is quite larger than 0.05.

Thus, the correct option is (A).

4 0
3 years ago
The improper fraction 9/8 equals what mixed number ​
Lana71 [14]
The answers is 1 1/8
4 0
3 years ago
Find an equation of the line described (3,7) (0,0)
Colt1911 [192]
The formula of the line is
y=mx + b
The likes goes through the point (0,0)
that means that y-int = 0, b=0
y=mx
So we need to find only slope.

m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}} =  \frac{7-0}{3-0} = \frac{7}{3} &#10;&#10;

So, y= \frac{7}{3} x



3 0
2 years ago
A polygon has a perimeter of 36 inches. Each side of the polygon has exactly 12 inches long. What is the name of the polygon tha
Nikitich [7]

Answer:

Equilateral Triangle

Step-by-step explanation:

Since each side is the same length, divide the perimeter by side length to get the number of sides.

36in ÷ 12in = 3

A triangle has 3 sides.

6 0
2 years ago
Read 2 more answers
Yeah i dont understand this-
Katyanochek1 [597]
You know each side is 9 meters long, meaning it’s a square. To find perimeter, add up all the sides aka. 9+9+9+9=36. To find the area, multiply one side by the other aka. 9x9 = 81.
7 0
2 years ago
Read 2 more answers
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