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The dot plot below shows the hourly rate of some babysitters in a city:A number line is shown from 1 dollar to 7 dollars in increments of 1 dollar for each tick mark. The horizontal axis label is Dollars per hour. There are 3 dots above 4 dollars, 2 dots above 5 dollars, 4 dots above 6 dollars, and 1 dot above 7 dollars. The title of the line plot is Babysitting Rates.

Which statement best describes the shape of the data?

It is symmetric and has a peak at $7.00.
It is not symmetric and has a peak at $6.00.
It is a cluster from $1.00 to $7.00 and has gaps.
It is a cluster from $1.00 to $7.00 and has no gaps.

Answers

Answer 1

Answer:

Answer:

It is not symmetric and has a peak at $6.00

Step-by-step explanation:

Drawn in text in a vertical fashion, we might show it as ...

4 | ooo

5 | oo

6 | oooo

7 | o

The data is clearly not symmetric, has a range from 4 to 7, and has a peak at 6. The appropriate description is ...

It is not symmetric and has a peak at $6.00

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What is the answer too 6+3=x-8?

Answers

Answer:

x = 17

Step-by-step explanation:

PhD’s in Engineering. The National Science Foundation reports that 70% of the U.S. graduate students who earn PhD degrees in engineering are foreign nationals. Consider the number Y of foreign students in a random sample of 25 engineering students who recently earned their PhD.a) Find the probability that there are exactly 10 foreign students in your sample – use equation for thisb) Find the probability that there are less than or equal to 5 foreign students in your sample andc) Find the mean and standard deviation for Y

Answers

Answer:

a) P(Y=10)=0.0013

b) P(Y≤5)=0.00000035

c) Mean = 17.5

S.D. = 2.29

Step-by-step explanation:

We can model this as a binomial random variable with n=25 and p=0.7.

The probability that k students from the sample are foreign students can be calculated as:

$P(y=k) = \dbinom{n}{k} p^(k)(1-p)^(n-k)\n\n\nP(y=k) = \dbinom{25}{k} 0.7^(k) 0.3^(25-k)\n\n\n$

a) Then, for Y=10, the probability is:

$P(y=10) = \dbinom{25}{10} p^(10)(1-p)^(15)=3268760*0.0282475249*0.0000000143\n\n\nP(y=10)=0.0013\n\n\n$

b) We have to calculate the probability P(Y≤5)

$P(y\leq5)=P(Y=0)+P(Y=1)+...+P(Y=5)\n\n\nP(x=0) = \dbinom{25}{0} p^(0)(1-p)^(25)=1*1*0=0\n\n\nP(y=1) = \dbinom{25}{1} p^(1)(1-p)^(24)=25*0.7*0=0\n\n\nP(y=2) = \dbinom{25}{2} p^(2)(1-p)^(23)=300*0.49*0=0.0000000001\n\n\nP(y=3) = \dbinom{25}{3} p^(3)(1-p)^(22)=2300*0.343*0=0.0000000025\n\n\nP(y=4) = \dbinom{25}{4} p^(4)(1-p)^(21)=12650*0.2401*0=0.0000000318\n\n\nP(y=5) = \dbinom{25}{5} p^(5)(1-p)^(20)=53130*0.16807*0=0.0000003114\n\n\n\n$

$P(y\leq5)=0+0+0.0000000001+0.0000000025+0.0000000318+0.00000031\n\nP(y\leq5)= 0.00000035$

c) The mean and standard deviation for this binomial distribution can be calculated as:

$\mu=np=25\cdot 0.7=17.5\n\n\sigma=√(np(1-p))=√(25\cdot0.7\cdot0.3)=√(5.25)=2.29$

Need Help on this, First RIGHT answer gets brainliest :)

Answers

Answer:

50%

Step-by-step explanation:

The circle is split into 4 parts and there are 2 parts of the circle shaded.

Step 1:

2/4 = 50/100

Step 2:

50/100 = 50%

Answer:

50%

Hope This Helps :)

the answer is 50% as half the circle is shaded!

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