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3 years ago

The sum of double a number and 8

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

8 0

The answer is 10...............

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A random sample of 85 group leaders, supervisors, and similar personnel revealed that a person spent an average 6.5 years on the

strojnjashka [21]

Answer:

95% of confidence interval for the Population

( 6.1386 , 6.8614)

Step-by-step explanation:

Step( i ):-

Given random sample size 'n' =85

Mean of the sample size x⁻ = 6.5 years

Standard deviation of Population = 1.7 years

Level of significance = 0.95 or 0.05

Step(ii):-

95% of confidence interval for the Population is determined by

$(x^{-} - Z_{0.05} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.05} \frac{S.D}{\sqrt{n} })$

$(6.5 - 1.96\frac{1.7}{\sqrt{85} } , 6.5 + 1.96 \frac{1.7}{\sqrt{85} })$

( 6.5 - 0.3614 , 6.5 + 0.3614 )

( 6.1386 , 6.8614)

Conclusion:-

95% of confidence interval for the Population

( 6.1386 , 6.8614)

8 0

4 years ago

The area of a rectangular flower bed is 6 ½ square feet. The width of the flower bed is ¾ foot. What is the length

harkovskaia [24]

Answer:

8 and 2/3 or 8.666666 forever

Step-by-step explanation:

5 0

3 years ago

Which expressions are equivalent to 12r-5?

Gekata [30.6K]

Answer:

Step-by-step explanation:

because u cant be wrong with going with none of the above due the fact that they could be decimals and they didn't want to write out the full number therefore making it incorrect. No need to thank me.

7 0

3 years ago

112 is 70% of _______

aliina [53]

Answer:

160

Step-by-step explanation:

70% of 160=112.

A handy trick is to divide the number by the percentage.

Brainliest please I need those points.

8 0

3 years ago

Read 2 more answers

Prove that 3^17−3^15+3^13 is divisible by 73. HELPPPPPP PLEASEEE

Fiesta28 [93]

Answer:

Well 3^17-3^15+3^13 equals 116,385,579

Now divide that by 73

So 116,385,579 ÷ 73

That equals 1,594,323

Hope this helps

4 0

3 years ago

Read 2 more answers