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3 years ago

6

A spinner with 8 equal sections was spun 140 times. What is a reasonable prediction for the number of times the spinner will lan

d on an even number?
step by step explanation

2 answers:

ahrayia [7]3 years ago

6 0

If you multiply 8 * 140 it equals 1120

NISA [10]3 years ago

6 0

It would be 280 because you would multiply 8 by 140 then divide by 4

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(a) (x+3)(x+2) =<br><br><br> How do I solve this without the use of parentheses

Ierofanga [76]

Answer: x^2+5x+6

Step-by-step explanation:

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3 years ago

Which statements are true about the residual plot and the equation for the line of best fit for the data? select two options.. t

Nataly [62]

The statements are true about the residual plot and the equation for the line of best fit include:

The equation for the line of best fit is not a good approximation for the data because the points have a curved pattern.

The residual plot has the pattern of a curve.

<h3>What is Residual plot?</h3>

This shows the residuals on the vertical axis and the independent variable on the horizontal axis.

Since the plot has a curved pattern, the equation for the line of best fit is not a good approximation for the data as the result will be inaccurate.

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2 years ago

The expected number of typographical errors on a page of a certain magazine is .2. What is the probability that an article of 10

Pavel [41]

Answer:

a) The probability that an article of 10 pages contains 0 typographical errors is 0.8187.

b) The probability that an article of 10 pages contains 2 or more typographical errors is 0.0175.

Step-by-step explanation:

Given : The expected number of typographical errors on a page of a certain magazine is 0.2.

To find : What is the probability that an article of 10 pages contains

(a) 0 and (b) 2 or more typographical errors?

Solution :

Applying Poisson distribution,

$N\sim Pois(0.2)$

$P(N=r)=\frac{e^{-np}(np)^r}{r!}$

where, n is the number of words in a page

and p is the probability of every word with typographical errors.

Here, n=10 and E(N)=np=0.2

a) The probability that an article of 10 pages contains 0 typographical errors.

Substitute r=0 in formula,

$P(N=0)=\frac{e^{-0.2}(0.2)^0}{0!}$

$P(N=0)=\frac{e^{-0.2}}{1}$

$P(N=0)=e^{-0.2}$

$P(N=0)=0.8187$

The probability that an article of 10 pages contains 0 typographical errors is 0.8187.

b) The probability that an article of 10 pages contains 2 or more typographical errors.

Substitute $r\geq 2$ in formula,

$P(N\geq 2)=1-P(N$

$P(N\geq 2)=1-[P(N=0)+P(N=1)]$

$P(N\geq 2)=1-[\frac{e^{-0.2}(0.2)^0}{0!}+\frac{e^{-0.2}(0.2)^1}{1!}]$

$P(N\geq 2)=1-[e^{-0.2}+e^{-0.2}(0.2)]$

$P(N\geq 2)=1-[0.8187+0.1637]$

$P(N\geq 2)=1-0.9825$

$P(N\geq 2)=0.0175$

The probability that an article of 10 pages contains 2 or more typographical errors is 0.0175.

6 0

3 years ago

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skad [1K]

Answer:

i think it is a

Step-by-step explanation:

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3 years ago

Which scatterplot shows a linear association?

algol [13]

A linear association is when the shape of the scatter plot is a straight line.

Therefore, the answer would be C, as you had it, because it is showing the data in a straight line.

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3 years ago

Read 2 more answers