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3 years ago

What is .689 in word form

Mathematics

1 answer:

Marat540 [252]3 years ago

4 0

Point six eight nine
cause we say them separately when they are after decimal

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20. What do you think would happen to the variability (standard deviation) of the distribution of sample proportions if the samp

Naya [18.7K]

Answer:

Step-by-step explanation:

Sample proportion p is the proportion of favourable numbers to total number in the sample

By central limit theorem and also approximation of binomial to normal , we have sample proportion for large number of samples will be normal

with mean = sample proportion

and std deviation = $\sqrt{\frac{pq}{n} }$

Thus we find standard deviation of proportion sample is inversely proportional to the square of the sample size n.

It follows automatically that as sample size increases std deviation decreases.

Here from 80 sample size was made to 200

So std deviation would decrease automatically

4 0

3 years ago

lara [203]

Preston have to get some correct and some incorrect answers.

6 0

3 years ago

Read 2 more answers

There is a 25% chance that Dane will make a three-point shot during a basketball game. A random-number generator generated 10 se

Gelneren [198K]

Answer:

the 25% chance is wrong, it is actually 20%

Step-by-step explanation:

Based on the table of trials shown in the picture, it seems that the 25% chance is wrong. In the table, there are 10 trials and each one has 5 numbers generated, meaning there are a total of 50 numbers generated. Out of these 50 numbers, only 10 are the number 3. Since 3 is the only number that represents a three-point shot, that would make it a 20% (10 / 50) chance that Dane makes a three-point shot in a basketball game.

3 0

3 years ago

Which is equivalent to (2^-3)^4 1/2^12 2 -2^12 1/2^7

sleet_krkn [62]

Answer:

The answer is First option

1/2^12 .

$\frac{1}{2^{12} }$

Step-by-step explanation:

Given:

(2^-3)^4

i.e

$(2^{-3} )^{4}$

To Find:

$(2^{-3} )^{4}=?$

Solution:

Law of Indices

$(x^{a}) ^{b} =x^{a\times b}\\and\\x^{-1}=\frac{1}{x}$

Using the above Property we get

∴ $(2^{-3} )^{4}=2^{-3\times 4} \\\\ (2^{-3} )^{4}=2^{-12} \\\\(2^{-3} )^{4}= \frac{1}{2^{12} }$

The answer is First option

1/2^12 .

$(2^{-3} )^{4}=\frac{1}{2^{12} }$

6 0

3 years ago

The range of the function f(x) = x + 5 is {7, 9}. What is the function’s domain?

ehidna [41]

$\bf \begin{cases}
\textit{function's range, is the values of "y"}\\
\textit{function's domain, is the values of "x"}
\end{cases}
\\\\
thus\qquad f(x)=y=x+5\to 
\begin{cases}
y=7\\
y=9
\end{cases}
\\\\\\
then\implies 
\begin{cases}
7=x+5\implies ?=x
\\\\
9=x+5\implies ?=x
\end{cases}$

solve for "x"

6 0

3 years ago