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Marina CMI [18]
2 years ago
9

Javier read a report that said the probability that a randomly selected American is left-handed is 14\%14%14, percent. He was cu

rious how many left-handed students to expect in a class of 303030 students. He simulated 100100100 classes of 303030 students where each student selected had a 0.140.140, point, 14 probability of being left-handed. Javier counted how many left-handed students were in each simulated class. Here are his results: Use his results to estimate the probability that there are 777 or more left-handed students in a class of 303030 students. Give your answer as either a fraction or a decimal. P(7\text{ or more left-handed})\approxP(7 or more left-handed)≈P, left parenthesis, 7, start text, space, o, r, space, m, o, r, e, space, l, e, f, t, negative, h, a, n, d, e, d, end text, right parenthesis, approximately equals
Mathematics
2 answers:
andrey2020 [161]2 years ago
5 0

Answer:

5/100

Step-by-step explanation:

elena55 [62]2 years ago
4 0

Answer:

= 0.1165

Step-by-step explanation:

In statistics, binomial distribution table  are ones in which one of two outcomes may result. Given the number of trials in an experiment ''n'', you can use these binomial distribution tables to look up the probability of a certain number of successes in the whole experiment.

P=14% = 0.14, n=30

Here we can use binomial distribution use binomial cumulative tables

Then P(More than 7) = P(x>7)

= 1 - P(x < 7)

= 1 - P(x ≤ 6)

= 1 - 0.8835

= 0.1165

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Find the mean, median and mode of the weights of the people shown. 105kg 53kg 76kg 91kg 120kg 61kg 55kg 98kg 61kg
Yuliya22 [10]
First, you need to put them in order
53kg, 55kg, 61kg, 61kg, 76kg, 91kg, 98kg, 105kg, 120kg

For mean, you add them all up and divide by the amount of numbers (9)
720/9 = 80

For median, you find the middle number (76kg)

For mode, you find the number that appears the most (61kg)

Mean: 80
Median: 76
Mode: 61
5 0
2 years ago
Read 2 more answers
The expression sinx + cotx cosx can be simplified to___. A. cotx B. cscx C. cosx sinx D. secx
Sav [38]
\sin x+\cot x\cos x=\sin x+\dfrac{\cos x}{\sin x}\cos x=\dfrac1{\sin x}(\sin^2x+\cos^2x)=\csc x
7 0
2 years ago
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If y = 8x − 2, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?
Nataly [62]
You just need to try with all of the pair f.ex
0,-2 -> put 0 in the x-> y=8*0-2=-2 so ok it is q possible pair of the function..
You try every pair till you find set where all the pairs fit
So set 1
1 and 6: 8*1-2=6 ok
2 and 14 : 8*2-2=14 ok
Hope I could help
6 0
2 years ago
Read 2 more answers
If point A is located at (-3,-1) and there are 10 points between A and B, what could be the possible coordinates for point B?
Nataly [62]

Answer:

Step-by-step explanation:

By drawing the point (-3,-1) in the coordinate plane we find the graph shown below. Since there are 10 points between points A and B, we need to start at point A and then we have to move 11 units either to the right, to the left, up, or down .

1. MOVING TO THE RIGHT:

From point A, move 11 units horizontally to the right to come to point B:

(-3+11, -1) = (8, -1)

2. MOVING TO THE LEFT:

From point A, move 11 units horizontally to the left to come to point B:

(-3-11, -1) = (-14, -1)

3. MOVING UPWARD:

From point A, move 11 units vertically upward to come to point B:

(-3, -1+11) = (-3, 10)

4. MOVING DOWNWARD:

From point A, move 11 units vertically downward to come to point B:

(-3, -1-11) = (-3, -12)

So this are the basic movements you can get to find point B. You also can move diagonally upwards or downwards  in whose case you would find other four points. The graph below shows a red point which is A, and the other points are in black color and represent B.

7 0
2 years ago
Write the first five terms of the geometric sequence in which a1=64 and the common ratio is 5/4
natita [175]

Remember that finding terms in a geometric sequence is done by multiplying the previous term by a common ratio r. For example, we can say:

a_2 = a_1 r

a_3 = a_2 r = (a_1 r)r = a_1 r^2


We have a_1 = 64. To find a_2, let's multiply this term by \frac{5}{4}:

a_2 = 64 \cdot \frac{5}{4} = 80


Now, let's use this to find all of our other terms:

a_3 = 80 \cdot \frac{5}{4} = 100

a_4 = 100 \cdot \frac{5}{4} = 125

a_5 = 125 \cdot \frac{5}{4} = \frac{625}{4}


Thus, our terms are 64, 80, 100, 125, and (625/4).

8 0
2 years ago
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