Answer: The plan A would be better deal for more than 300 calling minutes.
Step-by-step explanation:
Since we have given that
Plan A has a monthly fee of $15 with a charge of $0.08 per minute for all calls
Let the number of minutes be 'x'.
So, Equation would be
Plan B has a monthly fee of $3 with a charge of $0.12 per minute for all calls.
So, Equation would be
We need to find the number of calling minutes in a month to make plan A the better deal.
Hence, the plan A would be better deal for more than 300 calling minutes.
Answer:
14.81% probability an individual large-cap domestic stock fund had a three-year return of at least 19%
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the probability an individual large-cap domestic stock fund had a three-year return of at least 19%
This is 1 subtracted by the pvalue of Z when X = 0.19. So
has a pvalue of 0.8519
1 - 0.8519 = 0.1481
14.81% probability an individual large-cap domestic stock fund had a three-year return of at least 19%
Answer:
28
Step-by-step explanation:
hope this helped