3 years ago

Another 10 points cause i messed up

Mathematics

1 answer:

Elan Coil [88]3 years ago

5 0

Answer:

thank you? i guess...

Step-by-step explanation:

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For which sample size (n) and sample proportion (p) can a normal curve be

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Answer:

Option c.

Step-by-step explanation:

Using the normal curve to approximate a sampling distribution:

For a sample size n and a proportion n, the normal curve can be used if:

$np \geq 10$ and $n(1-p) \geq 10$

Option a:

$np = 35*0.8 = 28 > 10$

$n(1-p) = 35*0.2 = 7 < 10$

So option a cannot be used.

Option b:

$np = 65*0.9 = 58.5 > 10$

$n(1-p) = 65*0.1 = 6.5 < 10$

So option b cannot be used.

Option c:

$np = 65*0.8 = 52 > 10$

$n(1-p) = 65*0.2 = 13 > 10$

So option c can be used, and is the answer

Option d:

$np = 35*0.9 = 31.5 > 10$

$n(1-p) = 35*0.1 = 3.5 < 10$

So option d cannot be used.

The answer is given by option c.

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3 years ago

Determine the nature of the roots: 5x2 + 20x + 20 - 0

tankabanditka [31]

Two distinct real solutions

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3 years ago

Zoe is working two summer jobs, making $7 per hour babysitting and making $15 per hour clearing tables. In a given week, she can

Nesterboy [21]

Answer:

9 hours

Step-by-step

$7x4=$28

$130-$28=$102

$102 divided by 14=8.57/ 8 hours and 57 minutes

8 hours 57 minutes rounded =9 hours

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3 years ago

Simplify: 5 + p > 3 please help

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Answer:

p > -2

Step-by-step explanation:

5 + p > 3

p > 3 -5

p > -2

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Answer:

the answer to the question is 32

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