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Rufina [12.5K]
3 years ago
14

Andrew is employed and paid at rate of R650 per day . Calculate his new daily rate after a 7% increase. Show all your calculatio

ns ​
Mathematics
1 answer:
IceJOKER [234]3 years ago
8 0

Answer:

650 x 1.07 = 695.5.......

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Elijah opens a savings account with $60. Each week after, he deposits $25. In how many weeks will he have saved $600?
iren2701 [21]

Answer:

25w + 60= 600

25w= 540

w=21.6

Step-by-step explanation:

First make the equation

1. Subrtract 60 from each side

2. Now divide 25 on both sides

3. now you have the answer

I GOT A DECIMAL SO MAYBE ROUND OR PUT THAT EXACT ANSWER.

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Metric Conversion need help!!. . Which of the following is not the same as 1.69 meters? . . 0.0169 km. 0.169 dkm. 169 cm. 1,690
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<span>1.69 divide by 1000</span><span> =0.00169

169/100 = 1.69 meters
1690/1000=1.69
so the first one is not same
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What term describes the "3" in the expression 3x2÷1
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I think
Multiplication
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Bryce can build 3 benches in 11 hours. How many hours will it take him to build 12 benches?
gayaneshka [121]
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The CEO of a large electric utility claims that more than 75 percent of his customers are very satisfied with the service they r
vichka [17]

Answer:

z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462  

Now we can find the p value using the alternative hypothesis with this probability:

p_v =P(z>0.462)=0.322  

Since the p value is large enough, we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

Step-by-step explanation:

Information provided

n=100 represent the random sample selected

\hat p=0.77 estimated proportion of students that are satisfied

is the value that we want to test

z would represent the statistic

p_v represent the p value

System of hypothesis

We want to verify if more than 75 percent of his customers are very satisfied with the service they receive, then the system of hypothesis is.:  

Null hypothesis:p\leq 0.75  

Alternative hypothesis:p > 0.75  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info given we got:

z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462  

Now we can find the p value using the alternative hypothesis with this probability:

p_v =P(z>0.462)=0.322  

Since the p value is large enough we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

4 0
3 years ago
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