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3 years ago

Efficiency expert portfolio

1 answer:

6 0

A portfolio is efficient if one is unable to find a competing portfolio with a higher expected return and the same or lower rate of volatility.

<h3>The need for classifying portfolios between efficient and inefficient</h3>

Classification of portfolios are critical to investors. They help investors to make decisions regarding which portfolio to invest in.

Investors usually stay away from inefficient portfolios as a pose a higher risk relatively.

A portfolio is inefficient if there is another portfolio that has a higher return without a higher risk of volatility.

See the link below for more about Efficient Portfolios:

brainly.com/question/10820234

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A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with known standar

Vsevolod [243]

Answer:

This is a reasonable decision because the sample size has no effect on the 90% confidence interval

Step-by-step explanation:

90% confidence interval

larger sample size = 20

condition : sample mean ( x-bar ) is the same for both samples

<em>This is a reasonable decision because the sample size has no effect on the 90% confidence interva</em>l

<u>from condition 1 :</u>

Amount of drink dispensed is normally distributed with known standard deviation , given a random sample of n drinks and the sample mean at a confidence interval of 90%

<u>for condition 2 :</u>

sample size = 20

mean = 2.25 ( assumed value )

std = 0.15 ( assumed value )

Z = 1.645 ( Z-value )

determine the 90% confidence interval

= mean ± z $\frac{std}{\sqrt{n} }$