Let C= the number of customers to an automobile repair shop on a randomly selected day. The table gives the probability distribution of C Customer=0,1,2,3,4,5,6,7
Probability= 0.01,0.06,0.08,0.16,0.26,0.29,0.09, 0.05
A. Verify that the probability distribution of C is valid
B. To be profitable, the repair shop needs to have at least four customers per day. What is the probability that the shop is profitable on a randomly selected day
C. Is C continues or discrete? Explain briefly
D. Make a histogram of the probability distribution and describe its shape

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

the answer is  

d.

21

i did this one. so you should get it right.