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erica [24]
3 years ago
10

During the semester, all the students in a statistics class kept track of the number of mailings they received from a predatory

payday lender. The count for each is displayed below: Student Bob Sue Pam Lee Mary Carl Ace Moe Ann Mailings 16 17 11 21 15 14 17 18 19 The 75th percentile for the number of mailings for these students is:
Mathematics
1 answer:
Verdich [7]3 years ago
8 0

Answer:

The first step on this case is order the dataset on increasing way, and after do this we got:

11 14 15 16 17 17 18 19 21

We have a sample size of n =9

And in order to find the 75th percentile we need to find the position for this percentile with this formula:

n_{75} = 0.75* 9= 6.75\approx 7

So then we can conclude that the 75th percentile would be approximately on the 7 position of the dataset ordered and we got:

x_{75} = 18

Step-by-step explanation:

For this case we have the following data:

16 17 11 21 15 14 17 18 19

The first step on this case is order the dataset on increasing way, and after do this we got:

11 14 15 16 17 17 18 19 21

We have a sample size of n =9

And in order to find the 75th percentile we need to find the position for this percentile with this formula:

n_{75} = 0.75* 9= 6.75\approx 7

So then we can conclude that the 75th percentile would be approximately on the 7 position of the dataset ordered and we got:

x_{75} = 18

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Roll a die 10 sided die 3 times. What is the probability that the sequence is strictly increasing or decreasing?
snow_lady [41]

Answer:

The probability of obtaining a sequence which is neither strictly increasing nor decreasing in 0.76.

Step-by-step explanation:

We have 10 possible outcomes on a single throw.

So, outcomes in 3 throws = 10^{3} =1000 outcomes.

Let x be the number of strictly increasing arrangements.

Let y be the number of strictly decreasing arrangements.

Let z be the number of outcomes that are neither strictly decreasing nor strictly increasing

So, we have x+y+z=1000

If we look at a strictly increasing arrangement from the other/opposite side, it will look like a strictly decreasing arrangement.

So, x = y

Hence, we can say the final equation will be :

2x+z=1000

And for strictly increasing arrangements ,all 3 numbers will be different and it can be done in 10C3 ways.

10C3=\frac{10!}{3!7!} = 120 ways

So, 2x=2\times120=240

Thus z=1000-240=760

So, the probability is = \frac{760}{1000} = 0.76

Therefore, the probability of obtaining a sequence which is neither strictly increasing nor decreasing in 0.76.

4 0
3 years ago
Is a number is blank then the number is less than it’s absolute value
svlad2 [7]

Answer:

If a number is <u>negative</u> then the number is less than its absolute value.

Step-by-step explanation:

If a number is <u>negative</u> then the number is less than its absolute value.

6 0
3 years ago
How many cups equals one pint? How many cups equals one pint? 3 following 6 answers 6 Report Abuse Are you sure you want to dele
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8 0
3 years ago
Geometry parallel line diagrams
tamaranim1 [39]
<h2>Solution (1) :</h2>

∠<em>y</em><em> </em>and ∠<em>x</em> are alternate interior angles . Both of these angles will be equal in measure when on two parallel lines with a transversal .

<h2>Solution (2) :</h2>

∠y and ∠x are alternate interior angles . Both of these angles will have an equal angle measure when they lie on two parallel lines with a transversal .

<h2>Solution (3) :</h2>

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4 0
4 years ago
a child lies on the ground and looks up at the top of a 14-ft tree nearby. the child is 7 ft away from the tree. what is the ang
iragen [17]

Answer:

63°

Step-by-step explanation:

From the diagram, the angle of elevation from the child to the top of the tree can be calculated using the tangent ratio.

Recall SOH-CAH-TOA from your Trigonometry class.

The tangent is opposite over adjacent.

\tan(A)  =  \frac{14}{7}

A =  \tan^{ - 1} ( 2)

A = 63.43 \degree

The angle of elevation is 63° to the nearest degree.

7 0
3 years ago
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