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posledela
2 years ago
13

Compute the correlation coefficient for the data set.

Mathematics
1 answer:
loris [4]2 years ago
3 0

Answer:

0.8679.

Step-by-step explanation:

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The manufacturer of Pepsi claims that its 2-liter bottles contain, on average, no more than 250 calories. A sample of 20 2-liter
Stels [109]

Answer:

Yes, Sample information does indicate that a 2-liter bottle of Pepsi contains more than 250 calories  

Step-by-step explanation:  

Null Hypothesis [H0] : u < 250  

Alternate Hypothesis [H1] : u > 250 {One Tail}  

t = (x' - u) / [ sd / √n ]  

= (255 - 250) / (5.6 / √20)  

5 / (5.6 /√20)  

= 3.99  

As t ie 3.99 > t value 1.65 ie for one tail 95% confidence level. So, we reject the null hypothesis & conclude that it contains more than 250 calories.  

4 0
3 years ago
An isotope of iodine has a mass of 134 amu. How many neutrons does the
Nina [5.8K]

Answer:

The correct option is C: the isotope of iodine contains 81 neutrons.

Step-by-step explanation:

The mass (A) of the iodine isotope is given by:

A = Z + N

Where:

Z: is the number of protons

N: is the number of neutrons

For iodine Z= 53, so if A = 134 the number of neutrons is:

N = A - Z = 134 - 53 = 81

Therefore, the correct option is C. The isotope of iodine contains 81 neutrons.

I hope it helps you!

5 0
3 years ago
19.
ziro4ka [17]

Answer:

B. y= -3x2 + 3

Step-by-step explanation:

y= -3^2+3

4 0
3 years ago
What is the excluded value of x for
shtirl [24]

Answer:

value of x is for values that are excludedor or left out

5 0
2 years ago
Read 2 more answers
The expression 3(x-9) is equivalent to<br> 3(x)+9.<br> 3(x)+3(9).<br> 3(x) – 9.<br> 3(x) – 3(9).
sukhopar [10]

Answer:

3(x) – 3(9)

Step-by-step explanation:

3(x-9)

Distribute the 3 to each term in the parentheses

3*x -3*9

3x -27

3 0
2 years ago
Read 2 more answers
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