Hey according to me c 27 is the answer...
<u>Solution and Explanation:</u>
a) 51% of users of mobile phones use their phone at least once per hour,
It is a binomial distribution with n = 150, p = 0.51
mean = np = 150 multiply with 0.51 = 76.5
SD= sqrt(np(1-p) )= 6.1225
Since np and n(1-p) > 5, we can assume the distribution is normal.
B) please see the attached file.
c) It is a binomial distribution with n = 150, p = 0.02
mean = np = 150*0.02 = 3
SD= sqrt(np(1-p) )= 1.71464
Since np < 5, we cannot assume the distribution is normal.
<span>To calculate the cost of goods sold we use the following formula:
beginning inventory + the cost of goods purchased or manufactured = cost of goods available ending inventory.
Since there was no beginning balance in inventory account and all goods were sold we can assume that cost of goods = total costs for the period.
Adding up all costs for the period comes to $173,000.</span>
There are many types of malware disguise themselves as a free anti- virus program. I hope this helps! -eagle
Answer:
E) none of the above
12.70% and 2.49% standard deviation
Explanation:
We multiply probability by the outcome to get the weighted amount, we add them and get the expected return.
probability outcome weighted
0.25 0.10 0.0250
0.45 0.12 0.0540
0.30 0.16 0.0480
expected return 0.1270
Now that we got the expected return at 12.7%
We now subtract the possible outcome with the expected return and square them:
(0.127-0.1)^2
(0.127-0.12)^2
(0.127-0.16)^2
Then we add them and divide by the sample which is 3
0.000622
²√ 0.000622 = 0.024944383
<u><em>Final step,</em></u> will be the square root which gives the standard deviation
of 2.49% = 0.024947
