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Ksivusya [100]
3 years ago
6

Show down below how do you get the answer 359 x 12?

Mathematics
1 answer:
bija089 [108]3 years ago
6 0

Answer:

4308

Step-by-step explanation:

start by splitting 12 into 10 and 2

do 359 x 10 + 359 x 2

359x10= 3590

359x2= 718

3590+718=4308

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One stats class consists of 52 women and 28 men. Assume the average exam score on Exam 1 was 74 (σ = 10.43; assume the whole cla
Svetllana [295]

Answer:

(A) What is the z- score of the sample mean?

The z- score of the sample mean is 0.0959

(B) Is this sample significantly different from the population?

No; at 0.05 alpha level (95% confidence) and (n-1 =79) degrees of freedom, the sample mean is NOT significantly different from the population mean.

Step -by- step explanation:

(A) To find the z- score of the sample mean,

X = 75 which is the raw score

¶ = 74 which is the population mean

S. D. = 10.43 which is the population standard deviation of/from the mean

Z = [X-¶] ÷ S. D.

Z = [75-74] ÷ 10.43 = 0.0959

Hence, the sample raw score of 75 is only 0.0959 standard deviations from the population mean. [This is close to the population mean value].

(B) To test for whether this sample is significantly different from the population, use the One Sample T- test. This parametric test compares the sample mean to the given population mean.

The estimated standard error of the mean is s/√n

S. E. = 16/√80 = 16/8.94 = 1.789

The Absolute (Calculated) t value is now: [75-74] ÷ 1.789 = 1 ÷ 1.789 = 0.559

Setting up the hypotheses,

Null hypothesis: Sample is not significantly different from population

Alternative hypothesis: Sample is significantly different from population

Having gotten T- cal, T- tab is found thus:

The Critical (Table) t value is found using

- a specific alpha or confidence level

- (n - 1) degrees of freedom; where n is the total number of observations or items in the population

- the standard t- distribution table

Alpha level = 0.05

1 - (0.05 ÷ 2) = 0.975

Checking the column of 0.975 on the t table and tracing it down to the row with 79 degrees of freedom;

The critical t value is 1.990

Since T- cal < T- tab (0.559 < 1.990), refute the alternative hypothesis and accept the null hypothesis.

Hence, with 95% confidence, it is derived that the sample is not significantly different from the population.

6 0
3 years ago
Solve the system of equations. \begin{aligned} &amp; -5y-10x = 45 \\\\ &amp;-3y+10x=-5 \end{aligned} ​ −5y−10x=45 −3y+10x=−5 ​
sineoko [7]

Answer:

x = -2

y = -5

Step-by-step explanation:

We can solve this algebraically (substitution or elimination) or graphically. I will be using elimination:

Step 1: Add the 2 equations together

-8y = 40

y = -5

Step 2: Plug <em>y </em>into an original equation to find <em>x</em>

-3(-5) + 10x = -5

15 + 10x = -5

10x = -20

x = -2

And we have our final answers!

7 0
3 years ago
Read 2 more answers
Lane went to the bookstore he spent 1/3 of his money on a pen and 4/6 of it on books what fraction of his money did he have left
Mumz [18]

Answer: I believe that it might be $1.00


Step-by-step explanation: Well the problem doesn’t tell you how much money he HAD, so if you do 1/3+4/6 you should get 6/6 or 1 as the amount that Lane had.


3 0
3 years ago
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Apples cost $3.60 for 3 lb. At that rate, how many pounds of apples can you buy for $8.40?
irinina [24]

Apples cost $3.60 for 3 pounds . The rate can be calculated as follows

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The amount of pounds you can buy for $8.40 can be computed below

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6 0
1 year ago
Which statement describes a parallelogram that must be a square? A parallelogram with perpendicular diagonals. A parallelogram w
vichka [17]

Answer:

A parallelogram with diagonals that are congruent and opposite sides that are congruent.

Step-by-step explanation:

A square is defined as having all sides equal, and its interior angles all right angles (90°). From this it follows that the opposite sides are also parallel.

7 0
3 years ago
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