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mario62 [17]
3 years ago
8

Suppose that 84% of the cases of car burglar alarms that go off are false. Let p be the proportion of false alarms in a random s

ample of 110 cases of car burglar alarms that go off. Calculate the mean and standard deviation of p and describe the shape of its sampling distribution.
Round your answer to four decimals places if necessary

up= ______
op= ______

The sampling distribution of p is normal or skewed to the right?
Mathematics
1 answer:
serious [3.7K]3 years ago
6 0

Answer:

0.84 ; 0.0349545 ; symmetric

Step-by-step explanation:

Given that:

p = proportion of false alarm

Sample size (n) = 110

The mean of p

Since 84% of car buglar alarms turns out as false, then, the mean value of p = 0.84

To obtain the standard deviation ; we use the relation ;

√(p(1 - p) / n)

Standard deviation :

√0.84(1 - 0.84) / 110

√0.84(0.16) / 110

√0.1344 / 110

√0.0012218

= 0.0349545

np = 110 * 0.84 = 92.4 (distribution is symmetric or normal)

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Answer:

D is the most likely answer

Step-by-step explanation:

this problem is strange, but knowing that 3x + 17 has a domain of all reals, all of them are possible, so the only limits are 5 and 71...

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Is 43/99 rational or irrational
lianna [129]
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8 0
3 years ago
Read 2 more answers
How can I solve this problem? I dont want the answer I just need the steps to solving it finding the proportion??
bonufazy [111]
What you do is cross multiply
   1.5 x p & 6 x 10
after divide 1.5 on each side to get p alone
     1.5p/1.5 & ___/1.5
you should get your answer to what p equals
 hope this helped

3 0
4 years ago
Which linear equation represents a proportional relationship? A) y = x + 2 B) y = 3x + 0.2 C) y = −0.3x D) y = −3x + 4
posledela

Answer:

answer is c

Step-by-step explanation:y =

−0.3x

The given equations are in slope-intercept form, y = mx + b, where b represents the y-intercept.

Proportional relationships must pass through the origin. Therefore, the y-intercept for the equation must be 0. The y-intercept for y = −0.3x is 0.

7 0
3 years ago
In step 2, how do you know that 5x? and -12x? are like terms? If you could please help me with 1,2,3 if not just 2
klemol [59]
First we need to define what a like term is:

Like term meaning:

Terms whose variables (such as x or y) with any exponents (such as the 2 in x2) are the same. Examples: 7x and 2x are like terms because they are both "x".

Answer (for question 1):
For step one, you would just have to expand the brackets. The number of times multiplication would be used is 3 times. If you are confused, I attached a diagram in my ‘side notes’ section.

Answer (for question 2):
-5x squared and -12x squared are like terms because they both end in x squared.

Answer (for question 3):
There are no more like-terms.

Hope this helps!
Please give Brainliest!

Side notes:

3 0
2 years ago
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