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alexira [117]
3 years ago
7

Assume the standard deviation is $410 and that the amounts refunded follow a normal probability distribution. 1. What percent of

the refunds are more than $3,100? 2. What percent of the refunds are more than $3,100 but less than $3,500? 3. What percent of the refunds are more than $2,250 but less than $3,500?
Mathematics
1 answer:
Yakvenalex [24]3 years ago
3 0

Answer:

idk

Step-by-step explanation:

ndjwije ndjwijeyijg inetbauhfbuabwivahwonrvu8

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According to police sources, a car with a certain protection system will be recovered 87% of the time. Find the probability that
WITCHER [35]

Answer: 0.01145

Step-by-step explanation:

We use Binomial distribution , where the probability of getting x successes in n trial is given by :-

P(x)=^nC_xp^x(1-p)^{n-x} , p = probability of getting each success in each trial.

As per given

The proportion that a car with a certain protection system will be recovered= p=0.87

n= 8

Let x be the number of cars will be recovered.

Then, the probability that 4 of 8 stolen cars will be recovered:

P(X=4)=^8C_4(0.87)^4(1-0.87)^{8-4}

=\dfrac{8!}{4!(8-4)!}(0.87)^4(0.13)^4\\\\= 70(0.57289761)(0.00028561)\\\\=0.0114537700474\approx0.01145

Hence, the required probability is 0.01145.

5 0
3 years ago
Someone please help me
yuradex [85]

Answer:

112in²

Step-by-step explanation:

Formulas: V = \frac{lwh}{3}, V = lwh

Sub: v = \frac{4 x 4 x 6}{3}

Solve: 32

Sub: v = 4 x 4 x 5

Solve: 80

V = 80 + 32

V = 112

<u>The total volume of the figure is 112in²</u>

3 0
2 years ago
A variable that is both (1) mutually exclusive, (2) exhaustive, (3) has a rank order AND (4) has equal distance between categori
kodGreya [7K]

Answer:

<em>Interval variables</em>

Step-by-step explanation:

<em>An interval variable which is also refereed to as ordinal variable with the additional property that t has differences in magnitudes of the between two  meaningful values</em>

<em>An example of an interval variable is ,when a temperature of 90 degrees and 100 degrees is the same difference as between 90 degrees and 80 degrees.</em>

<em>Interval variables are also said to be mutually exclusive , exhaustive and also having a rank or ranking order.</em>

6 0
3 years ago
Find the selling price for the item flash drive: $12 markup:35%​
vesna_86 [32]

Answer:

16.2

Step-by-step explanation:

12*1.35=16.2

(can I get brainliest pls)

4 0
3 years ago
43: PLEASE HELP Write the equation 22x-2y-10 in slope-intercept form
Gnoma [55]

Answer:

y= 11x -5

Step-by-step explanation:

I believe you rearrange it to get y on one side of the equation so,

2y= 22x-10

and then divide 2 on both sides to get,

y=11x-5

7 0
3 years ago
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