2 years ago

STATISTICS!!!! PLEASE HELP ASAP

1 answer:

Rudiy272 years ago

5 0

Answer: they can conclude the distributions are different at the 95% confidence interval. Compute the z test statistic to solve this.

Step-by-step explanation: to get the 95% confidence interval on the mean take the mean value (984) +/- (2*standard deviation divided by the square root of the number of samples) (I.e. 984 +/- (2*267/sqrt(501)))

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In ΔSTU, s = 6.1 cm, t = 3.2 cm and u=7.4 cm. Find the measure of ∠S to the nearest 10th of a degree.

GuDViN [60]

Answer:

m∠S = 54.1°

Step-by-step explanation:

Use the law of cosines

$s^{2} = t^{2} + u^{2} - 2utcos S\\6.1^{2} = 3.2^{2} + 7.4^{2} - 2(3.2)(7.4) cos S$

37.21 = 10.24 + 54.76 - 47.36 cos S

-27.79 = -47.36 cos S

.586782 = cos S

arccos .586782 = S

m∠S = 54.1°

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3 years ago

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What is 5 + 5 /2 - 4 x 10

nalin [4]

Step-by-step explanation:

use bodmas

start with multiplication

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5+5/2 - 40

addition next

5 + 5/2 = 7.5

7.5 - 40 = -32.5

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3 years ago

A triangle with angles of 30, 60, and 90 degrees is drawn. Could all three side measures be the same length? Explain. PLEASE HEL

Semmy [17]

Answer:

No they would not because they are all different angles but if they were all the same numbers than yes so this triangle is a scalene that has no angles that are the same

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4 years ago

You talk to a friend who lives in a different state. She tells you that today it is 12° below zero where she lives. You tell her

Ostrovityanka [42]

Answer:

Step-by-step explanation:

One way of solving this is to first add 12 to get the number to 0. Then add another 54 to get to 54 degrees. Then you can add these two numbers together to get 66.

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3 years ago

My question is, with this type of question, are you supposed to use subtraction instead of addition? Just asking because I had a

sergeinik [125]

Im pretty sure you use addition? I may be wrong

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3 years ago

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