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Snezhnost [94]
3 years ago
7

PLEASE HELP !!!! u will get 15 points

Mathematics
2 answers:
lidiya [134]3 years ago
8 0

Answer:

67

Step-by-step explanation:

23 + 90 = 113

180 - 113 = 67

Oksanka [162]3 years ago
6 0

FYI an answer gets half the amount of points you set the value to.

Answer:

x=67 degrees

Step-by-step explanation:

A right angle is 90, the other value is 23. 90+23= 113, 180-113= 67

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A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is
BigorU [14]

Answer:

29.5+/-1.11

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Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

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Substituting the values we have;

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= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

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Answer: -40

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Step-by-step explanation:

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