Answer:
In a normal distribution:
Formula for z value = z = (x – μ) / σ
1) X= 16%
μ= 9.5%
σ= 4.5%
z= 16-9.5/4.5
=1.555 (Look up this score on t he z table)
Probability = 0.9394 (this is the probability of the return being in between 0%-16%, if we want to find the probability of the return being lower than or equal to 16% we have to subtract 0.9394 from 1)
1-0.9394=0.0606=6.06% of the stocks had higher than 16% return.
2) 1) X= 0%
μ= 9.5%
σ= 4.5%
Z= 0-9.5/4.5=-2.11
Probability = 0.0174 = 1.74% of the stocks had a return below 0
3) 3<X>17
μ= 9.5%
σ= 4.5%
Z=3-9.5/4.5=-1.44= 0.0749
z= 17-9.5/4.5= 1.66=0.9515
We have the probability of the stocks that return below 3% (0.0749)
and stocks which return under 17% (0.9515)
In order to find the proportion of stocks between 3% and 17% we will subtract 0.0749 from 0.9515
=0.8766
For 87.66 % of these corporations the rate of return was between 3% and 17
Explanation:
Producing more output by revamping operation methods of the assembly line.
B. is about total hours of labor, using the same technology
C. is about total workers, using the same technology
D. is about space to use the same technology
The answer is B, tho I could also understand C, I am pretty sure it’s B.
Answer:
1. A) Satisfying your day-to-day spending needs?
<u>Statement Savings account </u>
Bank statements will hep you keep track of the balance.
B) Making and holding funds for your car purchase?
<u>NOW Account.</u>
An account that earns interest yet allows the owner to write drafts against the money in the account. This would be good here as it will increase the funds you are saving for the car purchase.
C) Making and holding funds for your home purchase?
<u>NOW Account. </u>
NOW stands for Negotiable Order of Withdrawal account and would work here as well.
D) Making and holding funds for your retirement?
<u>Certificate of Deposit.</u>
These are offered by banks and earn a higher interest return. They however have to be locked up for a while without withdrawing so they are great for retirement saving.
2. Which of the following accounts is typically not insured?
<h2>
A. Mutual Funds.</h2>
Mutual funds are not financial deposits so will not be covered by the Federal Deposit Insurance Corporation (FDIC).
3. Which of the following practices would help you keep accurate records regarding the funds in your bank account?
- A. Keep track of your balance online.
- B. Immediately record the date and amount of each transaction in your check register and calculate the new balance.
4. You can avoid a service fee on an average-balance account if you:
- B. Keep a certain average daily balance in the account through a specified time
Answer:
b) 0.0751
c) We cannot afirm whether eating out or dinning in is cheaper
d) do not reject neither.
<u>Questions:</u>
(a). Develop appropriate hypotheses for a test to determine whether the sample data support the conclusion that the mean cost of a restaurant meal is less than fixing a comparable meal at home.
(b). Using the sample from the 100 restaurants, what is the p -value?
(c). At α = .05 ,what is your conclusion?
(d). Repeat the preceding hypothesis test using the critical value approach
Explanation:
(b)
We use excel function to get the Pz which is .0751
(c). 0.0751 > .05 , We cannot reject the hypotesis. Thus, we can neither say dinning in is more cheap nor eating out is cheaper.
(d). With = 99 , t .05 = −1.66 Reject H 0 if ? ≤ −1.66 −1.45 > −1.66 , do not reject
Degrees of freedom = n − 1 = 99 and Pz of 0.05 = -1.66
Reject when Pz < of -1.66
-1.45 > 1.66 threfore we cannot reject the hypotesis.
