All categories

2 years ago

Select the two recommendations that would decrease the margin of error of the interval.

1 answer:

8 0

From the options given, the only option which would result on having a reduced error margin, is to increase the sample size.

<u>Recall</u><u> </u><u>:</u><u> </u>

<em>Margin of Error</em> = Zcritical × σ/√n

Increasing the mean would have no impact on the margin of error as it is not a part of the factors which affects the margin of error value.

Increasing the standard deviation, which is the Numerator will result in an increased margin of error value.

By raising the confidence level, the critical value of Z will increase, hence widening the margin of error.

The sample size, n being the denominator, would reduce the value of error margin.

Hence, only the sample size will cause a decrease in the margin of error of the interval.

Learn more : brainly.com/question/25569754

You might be interested in

“Do not deny” & “Do not have to deny” are the same or different?

anzhelika [568]

Answer:

it's different bro.

do not deny simply mean to accept

but second one means that u have to accept it's just like obligation hmm duty... of urss but not must

mark brainlist plss

8 0

2 years ago

Read 2 more answers

Max (mass = 15 kg) is hanging from one end of a 13-m long bungee cord that has its other end fixed to a bridge above. The bungee

Rashid [163]

The stress experimented by the bungee cord due to Max's weight is approximately 299.680 kilopascals.

<h3>How to find the stress experimented by the bungee cord</h3>

Let suppose that the stress ( $\sigma$ ), in pascals, experimented by the bungee cord is entirely <em>elastic </em>and <em>uniform</em>. By Newton's Laws we know that the tension ( $T$ ), in newtons, experimented by the cord equals Max's weight. The stress on the bungee cord is axial and is described by following formula:

$\sigma = \frac{m\cdot g}{\frac{\pi\cdot D^{2}}{4} }$ (1)

Where:

$m$ - Max's mass, in kilograms
$g$ - Gravitational acceleration, in meters per square second
$D$ - Diameter of the circular cross section, in meters

If we know that $m = 15\,kg$ , $g = 9.807\,\frac{m}{s^{2}}$ and $D = 0.025\,m$ , then the stress experimented by the bungee cord is:

$\sigma = \frac{(15\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}{\frac{\pi}{4}\cdot (0.025\,m)^{2} }$

$\sigma \approx 299679.845\,Pa\, (299.680\,kPa)$

The stress experimented by the bungee cord due to Max's weight is approximately 299.680 kilopascals. $\blacksquare$

To learn more on stress, we kindly invite to check this verified question: brainly.com/question/1178663

4 0

2 years ago

olganol [36]

Answer:

d oil

not

scur

Explanation:

for me is d oil

but I'm not sure it's

ok for all

3 0

2 years ago

Robbie owns 15 percent more movies than rebecca and rebecca owns ten percent more than joshua rebecca has 220 movies how much do

MAVERICK [17]

Data given:

Robbie: 15% more than Rebecca:220 movies, which is 10% more than Joshua

Robbie=?

Joshua=?

Solution:

Robbie:

220+(220/10+220/5)=220+(22+11)=253 movies

Joshua:

220-(220/10)=220-22=198 movies

5 0

2 years ago

Which treatment is beneficial for a client with muscle spasm

Studentka2010 [4]

Thermotherapy refers to the type of treatment which is beneficial and most suitable for a client in the reduction of certain symptoms encountered such as muscle spasm.

<h3>What is Thermotherapy?</h3>

As the name implies involves the use of varying temperature as a form of therapy to certain medical conditions. This involves the application of a heating agent to reduce symptoms such as pain, spasm. The heat helps to loosen the blood vessels and ensure that there is increased blood flow to the affected part of the body system.

The high temperature will therefore loosen the muscles and ensure that they are much more relaxed. This method is suitable for promoting the healing process of most types of injuries and muscular issues encountered during our day to day activities.

Read more about Spasm here brainly.com/question/1814071

#SPJ1

6 0

1 year ago