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3 years ago

What term is used to describe the study of using limited resources to fulfill wants and needs?

Mathematics

2 answers:

amid [387]3 years ago

6 0

Answer: C, management

stealth61 [152]3 years ago

5 0

It’s b economics because I’ve already came across the exact question and everyone in the comments had answered B and were saying that their teachers said it was b as well as tutors.

It’s economics

You might be interested in

What is a number that has 2 digits

ELEN [110]

Answer:

Step-by-step explanation:

It has 2 digits

5 0

4 years ago

Read 2 more answers

Write the equation of the line given the points (2,0) and (3.-1)

Juli2301 [7.4K]

Answer:

y = -1x + 2

Step-by-step explanation:

We need to find y = mx + b

Use the following equation

$\frac{y_2-y_1}{x_2-x_1}$

Plug in the values

$\frac{-1-0}{3-2}$ = $\frac{-1}{1} = -1$

We have found the slope(m) which is -1

We have to find y-int b

Plug in any given x,y into the slope formula

-1 = -1(3) + b

-1 = -3 + b

2 = b

At last the formula is

y = -1x + 2

7 0

3 years ago

A bank is trying to determine which model of safe to install. The bank manager believes that each model is equally resistant to

alexandr402 [8]

Answer:

So on this case the 95% confidence interval would be given by (-1.152;5.152).

$-1.152 < \mu_{safe1}-\mu_{safe2}$

Should we conclude that the average time it takes experts to crack the safes does not differ by model at the 5% significance level?

A) Yes, the 95% confidence interval for ?D contains 0.

Step-by-step explanation:

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".

Solution

Let put some notation

x=value for Safe 1 , y = value for Safe 2

x: 103, 90, 64, 120, 104, 92, 145, 106, 76

y: 101, 94, 58, 112, 103, 90, 140, 110, 74

The first step is calculate the difference $d_i=x_i-y_i$ and we obtain this:

d: 2, -4, 6, 8, 1, 2, 5, -4, 2

The second step is calculate the mean difference

$\bar d= \frac{\sum_{i=1}^n d_i}{n}= \frac{18}{9}=2$

The third step would be calculate the standard deviation for the differences, and we got:

$s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1} =4.093$

The next step is calculate the degrees of freedom given by:

$df=n-1=9-1=8$

Now we need to calculate the critical value on the t distribution with 8 degrees of freedom. The value of $\alpha=1-0.95=0.05$ and $\alpha/2=0.025$ , so we need a quantile that accumulates on each tail of the t distribution 0.025 of the area.