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GalinKa [24]
3 years ago
11

You are constructing a 95% confidence interval using the information: n = 60, x-bar = 65.5, s = 2.5, and E = 0.70. What is the v

alue in the middle of the interval?
Mathematics
1 answer:
elena-s [515]3 years ago
6 0

Answer:

65.5

Step-by-step explanation:

Using the relation :

Xbar ± Margin of error

Margin of Error = Zcritical * s/√n

The Zcritical value at 95% = 1.96

Hence,

Margin of Error = 1.96 * 2.5/√60

Margin of Error = 1.96 * 0.3227486

Margin of Error = 0.6326

Lower boundary = 65.5 - 0.6326 = 64.867

Upper boundary = 65.5 + 0.6326 = 66.133

(64.867 + 66.133) / 2

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Eva8 [605]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Valerie is performing an experiment by spinning a metal weight around on the end of a nylon thread. How far does the metal weigh
Triss [41]

Answer:

35.6 m

Step-by-step explanation:

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3 years ago
Jamal starts work in January with a salary of RM 3650 per month.He gives 10% of his salary to his mother.How much money does Jam
kati45 [8]

Answer:

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Tax 56,500 × 10/100

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3 0
3 years ago
If a point is translated horizontally,the x-coordinate will stay the same.true or false
icang [17]
"horizonally" and "x-coordinate" are very much related.

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6 0
3 years ago
Read 2 more answers
What is an equivalent to -16m^2n-(-25m^2n)+(-7m^2n)
pantera1 [17]

Answer:

The equivalent expression is:

-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)=2m^2n

Step-by-step explanation:

Given the expression

-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a

=-16m^2n+25m^2n-7m^2n

\mathrm{Add\:similar\:elements:}\:-16m^2n+25m^2n-7m^2n=2m^2n

=2m^2n

Therefore, the equivalent expression is:

-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)=2m^2n

7 0
3 years ago
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