All categories

1 year ago

Assuming a linear relationship between x and y, if the coefficient of correlation (r) equals -0.75, this means that:

1 answer:

6 0

Since we are given that the relationship between x and y is linear. Therefore this means that the given equation takes the form of:

y = m x + b

where,

b is the y intercept of the equation

m is the slope of the equation

However we should take note that the slope m is directly proportional to the coefficient of correlation. Since our coefficient of correlation is negative, this only means that the value of y is decreasing with increasing x, hence plot of y and x is descending with increasing x. Furthermore, this also tells that for every 1 unit increase of x, there is a 0.75 units decrease of y.

You might be interested in

Temperature can be measured in two different common units: degrees Celsius and degrees Fahrenheit.

DerKrebs [107]

Answer:

Step-by-step explanation: FF represents the temperature in degrees Fahrenheit is equivalent to CC, the temperature in degrees Celsius.

F=32+1.8CF=32+1.8C

5 0

2 years ago

Tonyas dog walking service charges a flat rate of $20 per month, plus $3 per mile that each dog is walked. beth does not charge

andreev551 [17]

Answer:

Step-by-step explanation:

given that tonya charges 20$ monthly fee and 3$ per mile of her dog-walking service.

and beth does not charge any monthly fee but charges 5$ per mile of the dog walked in.

let x be the number of miles dog has walked in a month.

the amount tonya will charge on x miles = fixed monthly fee + number of miles * charge per mile = 20+3x

and the amount beth will charge on x miles = 0+ 5*x = 5x.

we are asked to find the x-value for which beth chargeable amount = tonya chargeable amount

that is 5x = 20+3x

5x-2x = 20

2x=20

x= $\frac{20}{2} = 10$

hence number of miles for which tonya and beth will charge the same amount is 10.

7 0

2 years ago

If a woman making $31,000 a year receives a cost-of-living increase of 2.4%, what will her new salary be?

kompoz [17]

Her new salary would be $31,744.

8 0

1 year ago

At 3:30 p.m., Berto’s train was 34 miles past the egg farm, traveling at an average speed of 85 miles per hour. At the same time

seropon [69]

Answer:

Step-by-step explanation:

Berto’s train was 34 miles past the egg farm .

Eduardo’s train had 12 miles to go before it reached the egg farm.

Distance between two trains = 34 + 12 = 46 miles

This distance has to be reduced to zero for their crossing each other .

Rate at which this distance is reduced = their relative velocity

= 110 - 85

= 25 miles / h [ They are moving in the same direction ]

So, time taken for them to meet each other

= 46 / relative velocity

= 46 / 25

= 1.84 hours .

6 0

2 years ago

Steph makes 90\%90%90, percent of the free throws she attempts. She is going to shoot 333 free throws. Assume that the results o

nikitadnepr [17]

Answer:

0.03

Step-by-step explanation:

khan:)

7 0

2 years ago

Read 2 more answers