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3 years ago

Anybody know this???

Mathematics

1 answer:

Rom4ik [11]3 years ago

8 0

Answer:

Step-by-step explanation:

well you have to use pemdas and put the letters with the numbers and stuff that is hard to explane

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The mayor of a town has proposed a plan for the annexation of an adjoining community. A political study took a sample of 1600 vo

Arturiano [62]

Answer:

Test statistic = -2.44

There is enough evidence to support the strategist's claim.

Step-by-step explanation:

H0 : p = 0.41

H1 : p < 0.41

pˆ = 0.38

Test statistic :

z=pˆ−p/√p(1−p)/n

Z = (0.38 - 0.41) / √(0.41(1 - 0.41) / 1600

Z = - 0.03 / √0.0001511875

Z = - 0.03 / 0.0122958

Z = - 2.4399

Test statistic = -2.44

The Pvalue :

P(Z < -2.44) = 0.0073436

α - level = 0.02

If Pvalue < α ; Reject H0

0.0073436 < 0.02 ; We reject H0

Since Pvalue < α ; Hence, There is enough evidence to support the strategist's claim.

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3 years ago

The dot plot shows the number of classes per semester that a group of boys and girls have chosen to take in their freshman year

jarptica [38.1K]

Answer:

The answer is 2 and 3

Step-by-step explanation:

6 0

3 years ago

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Find the measure of angle x. Round your answer to the nearest hundredth. (Numeral answers only)

gregori [183]

Sin (Angle) = Opposite / Hypotenuse

Sin (X) = 8/17

X = Arcsin(8/17)

X = 28.07 degrees.

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3 years ago

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When you multiply a number by itself multiple times, it's what

umka2103 [35]

Something to the power of baby

7 0

3 years ago

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PLEASE HELP ME with an explanation. Thanks in advance

REY [17]

Answer:

3) 0.30

The probability a randomly selected student plays a sport given they work part time = 0.30

Step-by-step explanation:

Step(i):-

Given 'A' plays a sport

B work part time

Given P(A) = 0.48

P(B) = 0.40

P(A∩B) =0.12

P(A∪B)¹ =0.24

Step(ii):-

By using conditional probability

$P(B/A) = \frac{P(BnA}{P(A)}$

and similarly $P(A/B) = \frac{P(AnB}{P(B)}$

The probability a randomly selected student plays a sport given they work part time

Now $P(A/B) = \frac{P(AnB}{P(B)}$

$P(A/B) = \frac{0.12}{0.40}= 0.30$

Final answer:-

The probability a randomly selected student plays a sport given they work part time = 0.30

8 0

3 years ago