Explain probability distribution of x name and, Ask an Expert

Statistics

Q1) Statistics department is contacting alumni by telephone asking for donation to help fund new computer laboratory. Past history illustrates that 40% of alumni contacted in this manner will make a contribution of at least $100. A random sample of 20 alumni is selected. Let X represents number of alumni which makes at contribution of at least $100.

a) Explain probability distribution of X (name and parameters).

b) Determine the probability that exactly 9 alumni will make contribution of at least $100?

c) Find out the probability that at least 9 alumni will make contribution of at least $100?

d) How many alumni would you expect to make a contribution of at least $100?

Determine the probability that at least 9 but not more than 12 will make a contribution of at least $100?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9169895

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Is there a way to approach this problem in excelthe

Is there a way to approach this problem in Excel: The Marriott Hotel marketing team wants to estimate ρ, the proportion of the hotel guests who were return visitors in the past three years. They select a simple random sa ...

In a panel discussion with 3 industry reps 2 government

In a panel discussion with 3 industry reps, 2 government reps, and 1 association rep, how many ways can they be seated along a row a) with no restrictions (each person can sit anywhere)? b) if the 3 industry reps must si ...

A laboratory worker finds that the 3 of his blood samples

A laboratory worker finds that the 3% of his blood samples test positive for the HIV virus. In a random sample of 70 blood tests, what is the mean number that test positive for the HIV virus? (Round your answer to 1 deci ...

An electronics store receives a shipment of 37 graphing

An electronics store receives a shipment of 37 graphing calculators, including 5 that are defective. Eight calculators are chosen at random to be sent to a local high school. How many selections contain 3 defective?

Suppose you sell a fixed asset for 121000 when its book

Suppose you sell a fixed asset for $121,000 when it's book value is $147,000. If your company's marginal tax rate is 35%, what will be the effect on cash flows of this sale (i.e., what will be the after-tax cash flow of ...

Thirty percent of the managers in a certain company have

Thirty percent of the managers in a certain company have MBA degrees as well as professional training. Eighty percent of all managers in the firm have professional training. If a manager is randomly chosen and found to h ...

Can you look for multicollinearity between a categorical

Can you look for multicollinearity between a categorical independent variable and a continuous dependent variable or can you only look for multicollinearity between a continuous independent variable and a continuous depe ...

The acme insurance company has two types of customers

The ACME Insurance Company has two types of customers, careful and reckless. A careful customer has an accident during the year with probability 0.01. A reckless customer has an accident during the year with probability ...

A researcher determines that students study an average of

A researcher determines that students study an average of 60 15 (M SD) minutes per week. Assuming these data are normally distributed, what is the z score for students studying 45 minutes per week?

Fifty-seven percent of employees make judgements about

Fifty-seven percent of employees make judgements about their co-workers based on the cleanliness of their desk. You randomly select 8 employees and ask them if they judge co-workers based on this criterion. The random va ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert