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gulaghasi [49]
3 years ago
7

$12,000 deposit, simple interest at 8.5% for 5 years.

Mathematics
1 answer:
lora16 [44]3 years ago
5 0

Answer:

$ 5100

Step-by-step explanation:

I= ?

p=$12000

r=8.5*1 /100=8.5/100

t=5yrs

I=P*R*T

= 12000*8.5*5 /100

=$ 5100

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Step-by-step explanation:

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A study was conducted to compare the proportion of drivers in Boston and New York who wore seat belts while driving. Data were c
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Answer:

a) The test statistic is z = -2.51

b) The pvalue is 0.0060.

Step-by-step explanation:

Question a:

Ha: pB < pNY

This means that the alternate hypothesis is rewritten as:

H_a: p_{B} - p_{NY} < 0

While the null hypothesis is:

H_0: p_{B} - p_{NY} = 0

The test statistic is:

z = \frac{X - \mu}{s}

In which X is the sample mean, \mu is the value tested at the null hypothesis and s is the standard error

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0 is tested at the null hypothesis:

This means that \mu = 0

Standard error = 0.1

This means that s = 0.1

Test statistic:

z = \frac{X - \mu}{s}

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The test statistic is z = -2.51

Question b:

The pvalue is the probability of finding a proportion less than -0.251, that is, a difference of at least 0.251, which is the pvalue of Z = -2.51.

Looking at the z-table, Z = -2.51 has a pvalue of 0.0060

The pvalue is 0.0060.

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