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Zigmanuir [339]
2 years ago
15

If the simple interest on $2,000 for 3 years is $300 then what is the interest rate?

Mathematics
1 answer:
Alona [7]2 years ago
4 0

Answer:

100 dollars a year

Step-by-step explanation:

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A survey of 1 comma 558 randomly selected adults showed that 522 of them have heard of a new electronic reader. The accompanying
sineoko [7]

Answer with explanation:

Let  p be the proportion of adults have heard of the new electronic reader.

Given claim : The accompanying technology display results from a test of the claim that 38​% of adults have heard of the new electronic reader.

i.e. p=0.38

Then , the set of hypothesis will be :-

H_0: p=0.38\\\\H_a:p\neq0.38

Since, the alternative hypothesis is two tailed , so the test is two-tailed test.

Also, it is given that the sample size : n=1558

Number of adults showed that they have heard of a new electronic reader=522

So the sample proportion for adults have heard of the new electronic reader : \hat{p}=\dfrac{522}{1558}\approx0.34



The test statistic for proportion is given by :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\\Rightarrow\ z=\dfrac{0.34-0.38}{\sqrt{\dfrac{0.38(1-0.38)}{1558}}}\\\\\\\Rightarrow\ z=-3.25279036541\approx-3.25

By using standard normal distribution table , the P-value for two tailed test corresponds to the obtained z-value ==0.0011541

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3 years ago
W(x)=-5(x-8)(x+4) what is the maximum height that the stone will reach?
Ganezh [65]

Answer:

the maximum height is 180 or y=180

Step-by-step explanation:

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3 years ago
Customers arrat a service window according to a poisson process with an average of 0.2 per minute.
suter [353]

Answer:

Step-by-step explanation:

Given that customers arrat a service window according to a poisson process with an average of 0.2 per minute

=  12 per hour.

a)  the probability that the time between two successive arrivals is less than 6 minutes

= For one hour more than 60/6 =10 customers arrive.

P(X>10) = 0.6528

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2 years ago
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Answer:

c

Step-by-step explanation:

4 0
3 years ago
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How do you answer this?
kobusy [5.1K]

Answer:

<h2>x= -3/2</h2>

Step-by-step explanation:

((4)²)^x = 1/(4)³

4²^x = 4³

thus the powers are same then

2x =-3

<h2>x=-3/2</h2>
8 0
3 years ago
Read 2 more answers
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