PLEASE HELP! 1. What type of random variable has a set of possible values which
ID: 3391722 • Letter: P
Question
PLEASE HELP!
1. What type of random variable has a set of possible values which is a collection of isolated points on the number line?
Select one:
a. continuous random variable
b. discrete random variable
c. any random variable
d. most random variables
2. A study of the weekly car sales from last year resulted in the following information. Only once did the dealership sell no cars in a week. Three times they sold only 1 car, five times they sold 2 cars, eight times they sold 3 cars, they never sold 4 cars, eleven times they sold 5 cars, twenty times they sold 6 cars, they never sold 7 cars, three times they sold 8 cars and one time they sold 9 cars.
Find the probability that at most 4 cars were sold in a week.
Select one:
a. 0.123
b. 17/52
c. 12/52
d. 16/52
3. A study of the weekly car sales from last year resulted in the following information. Only once did the dealership sell no cars in a week. Three times they sold only 1 car, five times they sold 2 cars, eight times they sold 3 cars, they never sold 4 cars, eleven times they sold 5 cars, twenty times they sold 6 cars, they never sold 7 cars, three times they sold 8 cars and one time they sold 9 cars.
Find the probability that at least 5 cars were sold in a week.
Select one:
a. 17/26
b. 17/52
c. 35/52
d. 32/52
4. A study of the weekly car sales from last year resulted in the following information. Only once did the dealership sell no cars in a week. Three times they sold only 1 car, five times they sold 2 cars, eight times they sold 3 cars, they never sold 4 cars, eleven times they sold 5 cars, twenty times they sold 6 cars, they never sold 7 cars, three times they sold 8 cars and one time they sold 9 cars.
Find the probability that between 3 and 6, inclusive, cars were sold in a week.
Select one:
a. 11/52
b. 0.25
c. 0.75
d. 31/52
5. A study of the weekly car sales from last year resulted in the following information. Only once did the dealership sell no cars in a week. Three times they sold only 1 car, five times they sold 2 cars, eight times they sold 3 cars, they never sold 4 cars, eleven times they sold 5 cars, twenty times they sold 6 cars, they never sold 7 cars, three times they sold 8 cars and one time they sold 9 cars.
Find the probability that an odd number of cars were sold in a week.
Select one:
a. 23/52
b. 22/52
c. 20/52
d. 1
6. A mail-order company has 6 phones lines available. Let X denote the number of lines in use at a specified time. The probability density function is:
Calculate the probability- at most 3 lines in use.
Select one:
a. 0.25
b. 0.45
c. 0.55
d. 0.70
7. A mail-order company has 6 phones lines available. Let X denote the number of lines in use at a specified time. The probability density function is:
Calculate the probability- Fewer than 3 lines in use
Select one:
a. 0.25
b. 0.45
c. 0.55
d. 0.70
8. A mail-order company has 6 phones lines available. Let X denote the number of lines in use at a specified time. The probability density function is:
Calculate the probability- At least three lines in use
Select one:
a. 0.25
b. 0.45
c. 0.55
d. 0.70
9 A mail-order company has 6 phones lines available. Let X denote the number of lines in use at a specified time. The probability density function is:
Calculate the probability- Between 2 and 5 lines inclusive in use
Select one:
a. 0.45
b. 0.51
c. 0.65
d. 0.71
10. A mail-order company has 6 phones lines available. Let X denote the number of lines in use at a specified time. The probability density function is:
Calculate the probability- Either 1 or 2 phone lines in use
Select one:
a. 0.35
b. 0.45
c. 0.55
d. 0.65
Weekly Car Sales X Frequency P(x) 0 1 1 3 2 5 3 8 4 0 5 11 6 20 7 0 8 3 9 1 Totals 52 =1Explanation / Answer
PLEASE HELP! 1. What type of random variable has a set of possible values which
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.