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MAVERICK [17]
3 years ago
10

The graph represents the average heights of boys in the United States from age two to age ten. A line of best fit has been drawn

through the data.
Which statement describes the correlation coefficient?




The correlation coefficient will have a value very close to 0.


The correlation coefficient will have a value very close to 1


The correlation coefficient will have a value very close to –1.


The correlation coefficient will have a value very close to 0.5.
Mathematics
2 answers:
kap26 [50]3 years ago
8 0

Answer:

The answer is B

Step-by-step explanation:

As it is very close to one because all the points are close together

kogti [31]3 years ago
6 0

Answer:

A gotchu Just took the test got 100

Step-by-step explanation:

B

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Solve the iniquity and graph the solution
klio [65]

Answer:

x>= -13

13 before 0

Step-by-step explanation:

Divide by 7 on each side to get:

x>=-13

7 0
3 years ago
The mean annual premium for automobile insurance in the United States is $1,499. Being from Pennsylvania, you believe automobile
timama [110]

Answer:

a) Then, t(s) is in the rejection region. We can not support that the mean annual premium in Pennsylvania is lower than the national mean annual premium

b) The point estimate of the difference is  59 $

Step-by-step explanation:

From sample we get:

sample size    n  =  25

annual mean   x  =  1440

standard deviation of the sample   s  =  150

mean for the mean annual premium    μ  = 1499

Hypothesis Test:

Null Hypothesis                      H₀           x  =   μ

Alternative Hypothesis          Hₐ           x  <   μ

Alternative Hypotesis indicates that the test is a one-tail test to the left

Let´s assume  confidence Interval 95 %    then  α  =  5 %   α = 0.05

As  n < 30 and we assume normality we will make a t-student test

degree of freedom    df  =  n  -  1    df  = 24

With df = 24  and  α = 0.05 and from t-student table we get t(c) =  - 1.711

To calculate t(s) we apply:

t(s)  =  (  x  -  μ ) / s/√n

t(s)  =  ( 1440  -  1499 ) * 5 / 150

t(s)  =  - 59/ 30

t(s)  =  - 1.96

Comparing t(s)  and t(c)  

|t(s)| > |t(c)|

Then, t(s) is in the rejection region. We can not support that the mean annual premium in Pennsylvania is lower than the national mean annual premium.

b) The point estimate for the difference is :   x  - μ  =  59 $

3 0
2 years ago
Your Olympic team wins 48 medals in the spring. The medals are gold, silver, and bronze in a ratio of 2 : 1 : 5. How many of eac
Rudiy27

Answer:

12, 6 and 30

Step-by-step explanation:

Step one:

given data

Number of medals = 48 medals

The given ratio is = 2:1:5

The total ratio is = 2+1+5= 8

Step two;

Applying the part to all method

for Gold we have

2/8=x//48

cross multiply

8x= 48*2

divide both sides by 8

x= 96/8

x= 12

gold is 12

for silver we have

1/8=x//48

cross multiply

8x= 48*1

divide both sides by 8

x= 48/8

x= 6

silver is 6

for bronze we have

5/8=x/48

cross multiply

8x= 48*5

divide both sides by 8

x= 240/8

x= 30

Bronze  is 30

5 0
3 years ago
Based on the data set shown, which of the following is a true statement?
timama [110]

Answer:

mean = mode

Step-by-step explanation:

To make this easier, let's find the mean, median, and mode.

Mean: Sum of a set of numbers divided by number of terms

Median: Middle number of data when data is in numerical order

Mode: Number that occurs most often in data

To find the mean, add all the values together. -1 - 1 + 0 + 1 + 1 + 1 + 1 + 2 + 2 + 2 + 3 = 11. Now, divide by the number of terms, which is 11. 11/11 = 1. The mean is 1.

To find the median, look at the number in the middle of the data. -1, -1, 0, 1, 1, 1, 1, 2, 2, 2, 3. The median is 1.

To find the mode, look at the number that occurs most often. There are 4 1's, so the mode is 1.

Since all numbers are equal, the only possible answer is the first option.

3 0
3 years ago
Farrah's goal is to use 236 gallons of water or less per day at her business. Her water bill showed that 8262 gallons were used
Vikki [24]

Answer: No

Step-by-step explanation:

8262 divided by 35 equals 236.05 something something something. So that is more than 236. Close, but no.

3 0
3 years ago
Read 2 more answers
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