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emmasim [6.3K]
3 years ago
5

Find the gradients of the lines A and B. a) Gradient of A is __ b) Gradient of B is __

Mathematics
1 answer:
Shkiper50 [21]3 years ago
6 0

Answer:

Kkķķkkkkkkkkkkkkkk

Step-by-step explanation:

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You are curious about the average number of yards Matthew Stafford throws for each game for the Detroit Lions. You randomly sele
Damm [24]

Answer:

The margin of error for this estimate is of 14.79 yards per game.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

T interval

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 20 - 1 = 19

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 19 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.093

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

You randomly select 20 games and see that the average yards per game is 273.7 with a standard deviation of 31.64 yards.

This means that n = 20, s = 31.61

What is the margin of error for this estimate?

M = T\frac{s}{\sqrt{n}}

M = 2.093\frac{31.61}{\sqrt{20}}

M = 14.79

The margin of error for this estimate is of 14.79 yards per game.

3 0
3 years ago
PLZ HELP NOW I WILL GIVE BRAINLIEST!
solmaris [256]

Answer:

TSA=6a²

TSA=6*17*17=1734 mm²

Step-by-step explanation:

6 0
3 years ago
The tv costs $850 you pay 20% , how much is left to pay
kogti [31]
The answer would be 680 because 20% of 850 is 170 so 850-170=680.
3 0
3 years ago
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Find the answer <br><br> A.<br><br> B.<br><br> C.
KATRIN_1 [288]
B. 68
I use the formula A= bh/2 it’s the same thing
8x17 = 136
136/2 = 68
6 0
3 years ago
I need help with 7 (M + 5) = 21
emmainna [20.7K]

Answer:

7(M+5)=21

or, 7M+35=21

or, 7M=21-35

or, 7M=-14

or,M=-14/7

or, M=-2

8 0
3 years ago
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