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2 years ago

What does Medicare tax support?

Mathematics

2 answers:

kirill [66]2 years ago

7 0

Answer:

The Medicare tax helps fund the Hospital Insurance Trust Fund. It's one of two trust funds that pay for Medicare.

VashaNatasha [74]2 years ago

3 0

It supports HI hospital insurance.

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Managers at an automobile manufacturing plant would like to estimate the mean completion time of an assembly line operation, . T

Vinil7 [7]

Answer:

The appropriate answer is "144".

Step-by-step explanation:

Given:

Population standard deviation,

$\sigma=10.4$

Margin of error,

$E=1.7$

$CL=95$ %

$CL=1-\alpha$

Or,

$\alpha=1-CL$

$=1-0.95$

$=0.05$

Now,

Critical value,

= $Z_{\frac{\alpha}{2} }$

= $Z_{\frac{0.05}{2} }$

= $1.96$

The minimum sample size will be:

⇒ $n=\frac{Z^2_{\frac{\alpha}{2} }(\sigma)^2}{E^2}$

By putting the values, we get

$=\frac{(1.96)^2(10.4)^2}{(1.7)^2}$

$=\frac{415.5074}{2.89}$

$=143.774$

or,

$=144$

3 0

3 years ago

The number of "destination weddings" has skyrocketed in recent years. For example, many couples are opting to have their wedding

melamori03 [73]

Answer:

We conclude that the mean wedding cost is less than $30,000 as advertised.

Step-by-step explanation:

We are given the following data set:(in thousands)

29100, 28500, 28800, 29400, 29800, 29800, 30100, 30600

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{236100}{8} = 29512.5$

Sum of squares of differences = 3408750

$S.D = \sqrt{\frac{3408750}{7}} = 697.82$

Population mean, μ = $30,000

Sample mean, $\bar{x}$ = $29512.5

Sample size, n = 8

Alpha, α = 0.05

Sample standard deviation, s = $ 697.82

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 30000\text{ dollars}\\H_A: \mu < 30000\text{ dollars}$ We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{29512.5 - 30000}{\frac{697.82}{\sqrt{8}} } = -1.975$

Now,

$t_{critical} \text{ at 0.05 level of significance, 7 degree of freedom } = -1.894$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it.

We conclude that the mean wedding cost is less than $30,000 as advertised.

8 0

4 years ago

The latest demand equation for your gaming website, www.mudbeast.net, is given by

horrorfan [7]

Answer:

C(x) = $850 - $350x

Monthly Profit = -500x² + 1550x - 850

x = $1.55

the largest possible monthly profit = $351.25

Step-by-step explanation:

Given:

Demand equation:

q = -500x + 1200

where, q is the number of users who log on per month

x is the log-on fee you charge

Site maintenance fee = $10 per month

High-volume access fee = $0.70 per log-on

Now,

C(x) = $10 + ( $0.70 × q )

C(x) = $10 + ( $0.70 × (-500x + 1200) )

C(x) = $10 + ( - $350x + 840 )

C(x) = $850 - $350x

Total monthly income = qx

Total monthly income = ( -500x + 1200 ) × x

Total monthly income = -500x² + 1200x

now,

Profit = Income - cost

Monthly Profit = -500x² + 1200x - ( 850 - 350x )

Monthly Profit, P(x) = -500x² + 1550x - 850

For the largest possible monthly profit

$\frac{d\textup{P(x)}}{\textup{dx}}$ = 0

$\frac{d(-500x^2+1550x-850)}{\textup{dx}}$ =0

-2 × 500x + 1550 = 0

-1000x + 850 = 0

x = $1.55

Now,

the largest possible monthly profit will be at x = $1.55

substitute in the function of profit

P(1.55) = ( -500× 1.55² ) + ( 1550 × 1.55 ) - 850

the largest possible monthly profit = - 1201.25 + 2402.5 - 850

the largest possible monthly profit = $351.25

7 0

3 years ago

CAN SOMEONE PLEASE HELP ME !

77julia77 [94]

I believe the answer would be 24 square units

5 0

4 years ago

What two number when multiplied equals -56 but when added equal -1

pishuonlain [190]

Answer: -7 and 8

Step-by-step explanation:

3 0

4 years ago