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disa [49]
3 years ago
7

Suppose a 95% confidence interval for µ turns out to be (1,000, 2,100). To make more

Mathematics
1 answer:
Aloiza [94]3 years ago
8 0

Answer:

A. Increase sample size

Step-by-step explanation:

From the formula for estimating the confidence level interval for the mean:

X - Z × s/sqrt n where; X = sample mean; Z = z value corresponding to 95%;

s = standard deviation and n = sample size

It is evident from the equation that the confidence interval for the mean is inversely proportional to the sample size (n), hence increasing the sample size will result in a reduced interval width.

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A investor obtained a loan of $600,000 to buy a car wash business. The monthly mortgage payment was based on 30 years at 5.5%. F
Lisa [10]

Answer:

The monthly mortgage payment is $ 8306.58

Step-by-step explanation:

Given as :

The loan taken as $ 600,000

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So, from compounded method

Amount = principal × (1 +\frac{Rate}{100})^{Time}

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Or, Amount =  $ 600,000 × (1.055)^{30}

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<u>Now for The monthly mortgage payment </u>

∵ Time period is 30 years

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Hence The monthly mortgage payment is $ 8306.58   Answer

4 0
4 years ago
Clark decides to share his 53 M&amp;M's with four friends. If he divides the M&amp;M's evenly amongst everyone (himself included
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1 m&m

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5 0
3 years ago
Josephine solved a quadratic equation. Her work is shown below.
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Answer:

Step-by-step explanation:

hello :

5(x + 7)² = 245

(x + 7)² = 49

x=0 is solution but you have other solution -14 because :(-14+7)² = (-7)² =49

here is an solution Step-by-step :

(x + 7)² = 49  means : (x + 7)² = 7²

(x + 7)² - 7²=0   use identity : a²-b² = (a-b)(a+b)

a=x+7  and b= 7

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x=0 or x+14=0

so : x=0 or x= -14

7 0
4 years ago
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