# stats help!

posted by .

suppose the number of customer complaints per day on the morning shift (6am-12) at Murph's Coffee is distributed as follows:
Complaints f(x)
0 .3
1 ???
2 .2

a) what is the value of ???

b)what is the average number of complaints per day on the morning shift?

c)what is the standard deviation of the number of complaints per day on the morning shift?

d)if Y is the number of inexperienced staff people at Murph's on the morning shift, would the values of X and Y be correlated? explain

## Similar Questions

1. ### History

According to L. M. Bowers, what are some of the complaints made by the workers at the Colorado Fuel and Iron Company, and how does he claim they have addressed those complaints?

The number of complaints received by a business bureau can be represented by the following probability distribution. Find the expected number of complaints per day. complaints per day -0,1,2,3,4,5 probability-0.01,0.11,0.26,0.28,0.19,0.12 …
3. ### statistics

Suppose the number of customer complaints per day on the morning shift 6-12 noon at Doys is distributed as # of complaints f(x) 0 .3 1 ?
4. ### biostatistics

among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. Assume the number of coffee drinks per day follows a normal distribution. a. What proportion drinks 2 cups per day or more?
5. ### statistics

The Better Businesss Bureau reports that they resolve 70% of the consumer complaints they receive. a) if a random sample of 5 consumer complaints is selected, what is the probability that all 5 were resolved?
6. ### Stats

1. In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4 …
7. ### statistics

A researcher is interested in whether herbal remedies are effective in relieving allergies, and if so, which ones are most effective. The researcher takes a group of 20 allergy sufferers and randomly assigns each one to receive herbal …
8. ### grammar clauses

The adjective clause in the following sentence modifies.... The time for complaints about the tax notices you have received has already passed. complaints, time or notices?
9. ### Math

A factory that runs 24 hours a day, 7 days a week, has shifts for its workers that are 7 hours long. If a shift starts on Sunday morning at 6AM, at what time does the earliest shift on the next Friday start?
10. ### Math

Complaints dropped from .7 to .07 per 1,000 people. Is this equivalent to saying there was a 90 percent reduction in complaints?

More Similar Questions