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harina [27]
2 years ago
6

I need help please help me and click the picture;-;

Mathematics
1 answer:
Advocard [28]2 years ago
4 0
D. 64, because 8x16 is 128, and that divided by 2 is 64. ;)
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Determine the sample size needed to construct a 99​% confidence interval to estimate the average GPA for the student population
Volgvan

Answer: n = 14

Step-by-step explanation: margin of error = critical value × σ/√n

Where σ = population standard deviation = 1

n = sample size = ?

We are to construct a 99% confidence interval, hence the level of significance is 1%.

The critical value for 2 tailed test at 1% level of significance is gotten from a standard normal distribution table which is 2.58

Margin of error = 0.7

0.7 = 2.58×1/√n

0.7 = 2.58/√n

By cross multipying

0.7×√n = 2.58

By squaring both sides

0.7^2 × n = 2.58^2

0.49 × n = 6.6564

n = 6.6564/0.49

n = 14

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3 years ago
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9 unless the regular shirt and trousers dont count, in which case it's 4

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3 years ago
Nancy’s 50-meter freestyle swim time was 28.004 seconds. Betty’s 50-meter freestyle swim time was 27.949 seconds. What was the d
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Is it possible to toss a coin 20 times and have it land heads-up 20 times?
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