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Leviafan [203]
3 years ago
11

PLEASEE HELPP MEE IN MATH!!!

Mathematics
2 answers:
irina1246 [14]3 years ago
6 0

Answer:

A. 62

Step-by-step explanation:

iren [92.7K]3 years ago
3 0

Answer:

The answer is c

Step-by-step explanation:

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Using eight eights and addition only, can you make 1000?
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..........................................................................................................................................................................................No

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A train travels 250 miles in 5 hours. At this rate, how many hours would it take for the train to
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2 years ago
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Almost all employees working for financial companies in New York City receive large bonuses at the end of the year. A sample of
lora16 [44]

Answer:

The 90% confidence interval for the average bonus that all employees working for financial companies in New York City received last year is between $43,819 and $50,181

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

T interval

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 62 - 1 = 61

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 61 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.67

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.67\frac{15000}{\sqrt{62}} = 3181

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 47000 - 3181 = $43,819

The upper end of the interval is the sample mean added to M. So it is 47000 + 3181 = $50,181

The 90% confidence interval for the average bonus that all employees working for financial companies in New York City received last year is between $43,819 and $50,181

6 0
2 years ago
Damon has 5 dimes and some nickles in his pocket what is the error 5n+50=1.20
Oxana [17]
The 50 is the error because cents are represented with decimals so it has to be .50
3 0
3 years ago
Due today helpppppppppp
Rudiy27

Answer:

Step-by-step explanation:

c and d

7 0
3 years ago
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