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3 years ago

HELP PLZZ

Mathematics

1 answer:

Arisa [49]3 years ago

4 0

19.5 because 6 minus 5.5 is equal to 0.5 and if you just add 0.5 to 19.5 it will be 19.5

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Please help me with this question

Tanya [424]

Your answer would be -16.

7 0

3 years ago

Joe heard from a reliable source that only 22% of people actually sleep 8 hours or more per night. You do a survey and find 58 o

Juliette [100K]

Answer:

95% Confidence interval: (31.32%,47.04%)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 148

Number of people who sleep for 8 hours or longer, x = 58

$\hat{p} = \dfrac{x}{n} = \dfrac{58}{148} = 0.3918$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.3918\pm 1.96(\sqrt{\dfrac{0.3918(1-0.3918)}{148}})\\\\ = 0.3918\pm 0.0786\\\\=(0.3132,0.4704)=(31.32\%,47.04\%)$

(31.32%,47.04%) is the required 95% confidence interval.

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3 years ago

(05.01)

choli [55]

Step-by-step explanation:

The graph of a system of parallel lines will have no solutions.

Always

Because they will never intersect, having same slopes.

=========================

The graph of a system of equations with different slopes will have no solutions.

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2 years ago

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Shkiper50 [21]

Answer:

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3 years ago

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bonufazy [111]

Answer:

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Step-by-step explanation:

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3 years ago

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