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hjlf
2 years ago
9

A random sample of 85 group leaders, supervisors, and similar personnel at General Motors revealed that, on average, they spent

6.5 years in a particular job before being promoted. The standard deviation of the sample was 1.7 years.
Construct a 95% confidence interval. (Round your answers to 2 decimal places.)

Mathematics
1 answer:
Ghella [55]2 years ago
5 0

Answer:

The 95% confidence interval is between 6.14 and 6.86

Step-by-step explanation:

See attached picture for solution

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Find the simple interest on $6000 from 16 May 2010 to 9 October 2010 at 10 percent per annum​
omeli [17]

Answer:

$240.02

Step-by-step explanation:

10% per year means "how much percent per day?"

We need to divide 10 by 365 since there are 365 days in a year. Hence,

\frac{10}{365}=0.0274

So, that is 0.0274% per day

In decimal, we have to divide this percentage by 100, so, that is:

0.0274/100 = 0.000274

Daily interest on the principal is thus the multiplication of this value with principal (6000), that is:

0.000274  * 6000 = 1.644

<u>For how many days??</u>

From 16 May till 9 October would be:

16 May - 31 May = 15 days

1 June - 30 June = 30 days

1 July - 31 July = 31 days

1 Aug - 31 Aug = 31 days

1 Sep - 30 Sep = 30 days

1 Oct - 9 Oct = 9 days

Total Days is  15 + 30 + 31 + 31 + 30 + 9 = 146 days

Thus, total simple interest for 146 days would be:

1.644 * 147 = $240.02

8 0
2 years ago
Curtis paid $80 on the vet bill for his dog. Then the vet charged him $40 more for his dog's medicine. If he now owes the vet $1
Klio2033 [76]

Answer:

He paid 80 at the start, so his starting must have been 80

Step-by-step explanation:

80+40=120...

so either 0, or 80 because he owed nothing, or he owed the 80, then the 40 for medication

I hope this helps!

8 0
2 years ago
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You just found a positive trend line showing a strong relationship between homework scores and test scores for five students. Ex
Scrat [10]

The positive trend among the homework scores and the test scores would reveal that if a student does well in homework, he is likely to do well in exams. This can be explained in the sense that the homework will serve as the practice for the student before finally taking the exam.

8 0
2 years ago
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Solving exponential growth and decay problems
Paul [167]
See tha attached pdf file and let me know how useful this answer is.
Download pdf
6 0
2 years ago
Emerson purchased a game that was on sale for 18% off. The sales tax in his county is 8%. Let y represent the original price of
leva [86]

Answer:

y(.82)*1.08

Step-by-step explanation:

You multiply by .82 to get the cost of the game after the discount and then by 1.08 to add the tax and total amount.  

6 0
2 years ago
Read 2 more answers
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