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Nataliya [291]
3 years ago
8

Find the values of x and y in the diagram. to A X = and y​

Mathematics
1 answer:
choli [55]3 years ago
8 0

Answer:

Where is the diagram?

Step-by-step explanation:

Where is the diagram?

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The weight of baby goats is believed to be Normally distributed, with a mean of 5.75 pounds. The average weight of a random samp
Julli [10]

Answer:

The standard error of the mean is 0.0783.

Step-by-step explanation:

The Central Limit Theorem helps us find the standard error of the mean:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}.

The standard deviation of the sample is the same as the standard error of the mean. So

SE_{M} = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\sigma = 0.35, n = 20

So

SE_{M} = \frac{\sigma}{\sqrt{n}}

SE_{M} = \frac{0.35}{\sqrt{20}}

SE_{M} = 0.0783

The standard error of the mean is 0.0783.

7 0
3 years ago
A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea
weqwewe [10]

Answer:

a)  8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

P(X=x)= n!/((n-x)!*x!)*p^x*(1-p)^(n-x)

where

n= total number of questions= 25

p= probability of getting a question right = 1/4

then

a) P(x=n) = p^n = (1/4)²⁵ = 8*88*10⁻⁶ ( 0.00088 %)

b) P(x<5)= F(5)

where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

7 0
4 years ago
What is the smallest integer greater than 1 that is both the square of an integer and the cube of an integer?
serg [7]

Answer: 64

√64 = 8

∛64 = 4

5 0
3 years ago
Help brainliest for correct answer
Ksju [112]

Answer:

nooooooooo

Step-by-step explanation:

mark me brainlist

5 0
3 years ago
Frank has a cupboard for his books and toys. The cupboard is split into 6 parts. 1 part is for keeping his books and notebooks.
konstantin123 [22]

Answer:

1/6 ÷2

1/12

Step-by-step explanation:

1 cabinet is divided into 6 parts. He splits 1 part of the 6 in half

1 ÷6 ÷ 2

1/6 ÷2

Copy dot flip

1/6 * 1/2

1/12

3 0
3 years ago
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