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dedylja [7]
3 years ago
9

Suppose that--in any given time period--a certain stock is equally likely to go up 1 unit or down 1 unit, and that the outcomes

of different periods are independent. Let X be the amount the stock goes up (either 1 or -1) in the first period, and let Y be the accumulative amount it goes up in the first three periods. Find the correlation between X and Y.
Mathematics
1 answer:
Leviafan [203]3 years ago
6 0

Answer:

x =45 and y = 23

Step-by-step explanation:

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Pls help solve<br> find t
IgorC [24]

Answer:

-t = -8 ×5

-t = -40

t= 40

good luck have a nice day

7 0
3 years ago
Suppose that the store manager of a small rural pharmacy is doing a linear regression of daily sales of over-the-counter (OTC) d
Doss [256]

Answer:

3.83

Step-by-step explanation:

Mean of x = Σx / n

Mean of x = (14 + 19 + 13 + 6 + 9) / 5 = 12.2

Sum of square (SS) :

(14-12.2)^2 + (19-12.2)^2 + (13-12.2)^2 + (6-12.2)^2 + (9-12.2)^2 = 98.8

Mean of y = Σy / n

Mean of y = (101 + 89 + 48 + 21 + 47) / 5 = 61.2

Σ(y - ybar)² = (101-61.2)^2 + (89-61.2)^2 + (48-61.2)^2 + (21-61.2)^2 + (47-61.2)^2 = 4348.8

df = n - 2 = 5 - 2 = 3

Σ(y - ybar)² / df = 4348.8 / 3 = 1449.6

√(Σ(y - ybar)² / df) = √1449.6 = 38.074

Standard Error = √(Σ(y - ybar)² / df) / √SS

Standard Error = 38.074 / √98.8

Standard Error = 3.83

4 0
2 years ago
According to the table, how many students in the seventh grade bike to school?
NARA [144]

Answer:

The anwser is B.) 49

Step-by-step explanation:

If you subtract 79 (the amount of 7th graders riding the bus) from 128 (the total number of 7th graders) you will get 49. Therefore 49 is the answer.

Hope this helps!!

4 0
3 years ago
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How many times greater is 9 times 10 to the 5 power than 8 times 10 to the 2 power<br>​
Schach [20]

Answer:

1125 times bigger

Step-by-step explanation:

6 0
3 years ago
Jamie bought 5/8 of wheat flour. He also bought 1/4 pound of white flour. How much flour did he buy
KonstantinChe [14]
7/8     you have to make 1/4 into 2/8  and 2/8+5/8=7/8







7 0
3 years ago
Read 2 more answers
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