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3 years ago

The yoga class meets twice a week.

1 answer:

wel3 years ago

6 0

We can write ratios in fraction form
1:6 = 1/6
2:11 = 2/11
Therefore we can expand the fractions so that the bottom number will be the same
1/6 = 11/66
2/11 = 12/66
11 is less than 12, which means there's less men on tuesday.
Therfore on tuesday there should be more women.

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You are interested in purchasing a new car and have done some research. One of the many points you wish to consider is the resal

kari74 [83]

Answer:

The 99% confidence interval would be given by (12004.26;12995.74)

Explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=12500$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s=700 represent the sample standard deviation

n=17 represent the sample size

2) Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=17-1=16$

Since the Confidence is 0.99 or 99%, the value of $\alpha=0.01$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,16)".And we see that $t_{\alpha/2}=2.92$

Now we have everything in order to replace into formula (1):

$12500-2.92\frac{700}{\sqrt{17}}=12004.26$

$12500+2.92\frac{700}{\sqrt{17}}=12995.74$

So on this case the 99% confidence interval would be given by (12004.26;12995.74)

8 0

2 years ago

What is the average production cycle?

Tcecarenko [31]

Answer: Total amount of goods produced/Time of Production = Cycle time.

Explanation: production cycle is generally understood as the period of time during which a company produces a finished product from its stocks, then the reduction of this period of time, especially in comparison with competitors, is an important indicator to determine economic efficiency.

7 0

2 years ago

A company that utilizes carbon fiber 3-D printing wants to have money available two years from now to add new equipment. The com

Alenkinab [10]

Answer:

Total amount available in two years is $1,354,125.

Explanation:

The total amount available in two years can be calculated as follows:

Total amount in the deposit now = Current deposit + Amount planned to be deposited = $650,000 + $200,000 = $850,000

Future value of the total amount the deposit now = Total amount in the deposit now * (1 + Annual interest rate)^Number of years the deposit used = $850,000 + (1 + 15%)^2 = $1,124,125

Future value of next year's deposit = Next year's deposit * (1 + Annual interest rate)^Number of years the deposit used = $200,000 * (1 + 15%)^1 = $230,000

Total amount available in two years = Future value of the total amount the deposit now + Future value of next year's deposit = $1,124,125 + $230,000 = $1,354,125

5 0

3 years ago

Dehnert Midwifery's cost formula for its wages and salaries is $2,030 per month plus $409 per birth. For the month of May, the c

notsponge [240]

Answer:

The Answer is A. $47,838.

Explanation:

8 0

3 years ago

High and unexpected inflation has a greater cost

saw5 [17]

D. For savers in low income tax brackets than for savers in high income tax brackets.