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mr_godi [17]
3 years ago
5

Please help with Number 4. I don’t know how to help my daughter and I was not educated :(

Mathematics
2 answers:
worty [1.4K]3 years ago
5 0

Answer:2.73

Step-by-step explanation: 2.73

ycow [4]3 years ago
5 0

The answer is 2.73 I think

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3 years ago
Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif
dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

<u>Step:-1</u>

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals t_{0.01} =2.82  (from tabulated value).

The mean value = 0.0365

x±t_{0.01} \frac{S}{\sqrt{n-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }

0.0365±2.82 \frac{0.0046}{\sqrt{22} }

0.0365±2.82 \frac{0.0046}{4.690 }

using calculator

0.0365±0.00276

Confidence interval is

(0.0365-0.00276,0.0365+0.00276)

(0.0338,0.0392)

the mean value is lies between in this confidence interval

(0.0338,0.0392).

<u>Answer:-</u>

<u>using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.</u>

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2 years ago
How do I solve 12 + 2x + 1 = 59
aksik [14]
You can look up cymath.com it will work the problem out for you and show you the steps.
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jolli1 [7]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
If 4 blocks weigh 28 ounces how many blocks weigh 70 ounces
Sloan [31]

Answer:

10 blocks.

Step-by-step explanation:

Find the unit rate.

\frac{28}{4}=\frac{7}{1}=\frac{70}{10}

Therefore, 10 blocks weigh 70 ounces.

3 0
3 years ago
Read 2 more answers
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