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Nadya [2.5K]
3 years ago
14

The process of selecting elements from a population, collecting data from them, and using it as representative of all those a re

searcher is interested in is referred to as Group of answer choices hypothesis generation. sampling. information gathering. statistical inference. probability extrapolation.
Mathematics
1 answer:
IrinaVladis [17]3 years ago
5 0

Answer:

Step-by-step explanation:

i don't know sorry

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A box contains 300 raffle tickets. Only 15 tickets are winning tickets. What is the
Roman55 [17]

Answer:

5%

Step-by-step explanation:

15/300 = 0.05

5%

3 0
2 years ago
Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with mea
Anika [276]

Answer:

About 3 years Speedy Jet printers be guaranteed.

Step-by-step explanation:

Given : Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with

mean \mu = 4 and standard deviation  \sigma = 0.78

If the company wishes to replace no more than 10% of the printers.

To find : How long should Speedy Jet printers be guaranteed ?

Solution :

Using Z- table,  

Z value corresponding to 10% or 0.10 = -1.28.

Applying z-score formula,

z=\frac{x-\mu}{\sigma}

The value of x is given by,

x=(z\times \sigma)+\mu

Substitute the values,

x=(-1.28\times 0.78)+4

x=-0.9984+4

x=3.0016

So, approx 3 years.

Therefore, About 3 years Speedy Jet printers be guaranteed.

8 0
3 years ago
A coin flipped 14 times and it comes up heads 10 times what is the experimental probability of the coin’s coming up heads ?
Gekata [30.6K]

The answer is B.

If a coin is flipped 14 times and lands on heads 10 times the fraction would equal to 10/14.

10/14 simplifies to 5/7.

3 0
3 years ago
Read 2 more answers
Riley solved and equation as shown in the table
Mama L [17]
She made the mistake in step 4

She should have divided by -2 not just 2 alone
6 0
3 years ago
Construct a linear equation for the linear data presented in the table
yaroslaw [1]

Answer:

y = -7x

Explanation:

Take two points from table: (-4, 28), (-3, 21)

Find slope:

\sf slope: \dfrac{y_2 - y_1}{x_2- x_1} \ \  where \ (x_1 , \ y_1), ( x_2 , \ y_2) \ are \ points

\rightarrow \sf slope\ (m):   \dfrac{21-28}{-3-(-4)}  = -7

Now find equation:

\sf y - y_1 = m (x - x_1)

\rightarrow \sf y - 21 = -7(x - (-3))

\rightarrow \sf y  = -7(x +3) + 21

\rightarrow \sf y  = -7x -21 + 21

\rightarrow \sf y  = -7x

5 0
2 years ago
Read 2 more answers
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