Isla flipped a coin 30 times. The coin landed heads up 9 times and tails up 21 times.

1 answer:

8 0

A.) Either way the probability would be 1/2 because there are only 2 sides of a coin so fate decides on which side it will land on.

B.)Same as A

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PLZ HELP ASAP

svet-max [94.6K]

Answer is D:
e + 5 = 3e - 11

2e = 16
e = 8

Ella is 8 years old
Jamie is 8+5 = 13 years old

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2 years ago

Find the slope of the line in the graph below.<br><br>

swat32

Answer:

What graph? Maybe if you added the graph with the question it would be easier....... Thanks for the points tho lol

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2 years ago

The u.s. department of health and human services collected sample data for 772 males between the ages of 18 and 24. that sample

soldier1979 [14.2K]

The 99% confidence interval for the true mean is given by:

$\bar{x}\pm z_{\alpha/2} \frac{\sigma}{\sqrt{n}}$

where:

$\bar{x}$ is the sample mean = 69.7
$\sigma$ is the standard deviation = 2.8
$z_{\alpha/2}$ is the test statistics = 2.58 for for 99% confidentce interval.
n is the sample size = 772.

Therefore, the 99% confidence interval is:

$69.7\pm2.58\left( \frac{2.8}{\sqrt{772}} \right)=69.7\pm2.58(0.1008) \\ \\ =69.7-0.26\leq\mu\leq69.7+0.26 \\ \\ =69.44\leq\mu\leq69.96$

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2 years ago

Read 2 more answers

Plzzzzzz help I am confused

Rashid [163]

WOW I'm in middle school too and we don't even do this stuff

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2 years ago

The quality control team of a company checked 800 digital cameras for defects. The team found that 20 cameras had lens defects,

dmitriy555 [2]

Answer:

0.025