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Alexxx [7]
3 years ago
8

Rafael deposits $5000 into and account that pays simple interest at an annual 5%. He does not make anymore deposits. He makes no

withdrawals until the end of 6 years when he withdraws all the money.
Answer the following questions.
A)How much total interest will Rafael earn?

B)What will the total amount in the account be(including interest)?
Mathematics
2 answers:
nekit [7.7K]3 years ago
5 0

Answer:

Step-by-step explanation:

sorry idk

LuckyWell [14K]3 years ago
4 0

Answer:

$6500

Step-by-step explanation:

1.05 is Simple Interest of 5%

5000 times 1.05 equals 5250

5250 minus 5000 equals 250

250 times the 6 years is 1500

1500 plus 5000 is 6500

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In recent years more people have been working past the age of 65. In 2005, 27% of people aged 65–69 worked. A recent report from
Taya2010 [7]

Answer:

a) The point estimate of the proportion of people aged 65–69 who are working is p=0.3 or 30%.

b) We can express this null and alternative hypothesis as:

H_0: \pi=0.27\\H_1:\pi\neq0.27

c) We conclude that there is not enough evidence that the proportion of people aged 65–69 who are working has increased from 2005.

Step-by-step explanation:

a) Develop a point estimate of the proportion of people aged 65–69 who are working

If we take into account the sample taken, the point estimate is

p=\frac{180}{600} =0.3

b) Set up a hypothesis test so that the rejection of h0 will allow you to conclude that theproportion of people aged 65–69 working has increased from 2005

To conclude some claim, we have to reject the null hypothesis. In this case, to claim that the proportion has changed and the mean is no longer 27%, we have to reject the null hypotesis that π=0.27.

We can express this null and alternative hypothesis as:

H_0: \pi=0.27\\H_1:\pi\neq0.27

c) Conduct your hypothesis test using α=0.05. What is your conclusion?

First we calculate the standard deviation, as we will need it to calculate the test statistic:

\sigma=\sqrt{\frac{\pi(1-\pi)}{N} } =\sqrt{\frac{0.27(1-0.27)}{600} }=0.01812

In this case, we have a test statistic of

z=\frac{p-\pi-0.5/N}{\sigma} =\frac{0.3-0.27-0.5/600}{0.01812}=1.61

If we take into account that it is a two-tailed test, P-value for z=1.61 is P=0.1074.

As the P-value is bigger than the significance level, the effect is not statistically significant, so the hypothesis can not be rejected.

We conclude that there is not enough evidence that the proportion of people aged 65–69 who are working has increased from 2005.

8 0
3 years ago
Read 2 more answers
Can someone help me? please
Vilka [71]
Its the third one- 1/2
7 0
2 years ago
Read 2 more answers
What is the value of n?
bogdanovich [222]

Answer:

<h3>B. 85°</h3>

Step-by-step explanation:

Look at the picture.

We know: Angles on one side of a straight line always add to 180°.

Therefore:

\alpha=180^o-142^o=38^o\\\\\beta=180^o-133^o=47^o

We know: the sum of the measures of the angles of the triangle is equal to 180 °.

Therefore:

\gamma+47^o+38^o=180^o

\gamma+85^o=180^o      <em>subtract 85° from both sides</em>

\gamma=95^o


n^o+95^o=180^o\to n^o=180^o-95^o=85^o

8 0
3 years ago
Read 2 more answers
Identify the zeros of f(x) = 2x^6 +2x^5
elena-14-01-66 [18.8K]

Answer:

0, -1

Step-by-step explanation:

zeros occur when 2x^6+2x^5=0

the first way for this to happen would be to set x to 0. both terms would become zero.

the second way is x = -1

first term becomes 2

second becomes -2

these add to zero

6 0
3 years ago
Rachel jogged along a trail that was one fourth of a mile long.she jogged along the trail 8times .how many miles did rachael jog
anygoal [31]
So you are given that the trail is 1/4 a mile
she jogged 8 *TIMES*
so 8 * 1/4 = the total miles she jogged
That equals to 2 miles...

Hope this helps :)
7 0
3 years ago
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