Question

Question (4) [2 Marks] Note: Do not use R, do the calculations by hand. Coliform bacteria...

Question (4) [2 Marks]

Note: Do not use R, do the calculations by hand.

Coliform bacteria occur in river water with an average intensity of 1 bacteria per 10 cubic centimeters (cc) of water.

Find:

(a) [1 point] The probability there are no bacteria in a 20cc sample of water which is tested.


(b) [1 point] The probability there are 5 or more bacteria in a 50cc sample.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

TOPIC:Poisson distribution.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Question (6) [2 Marks] Note: Do not use R, do the calculations by hand. Three times...
Question (6) [2 Marks] Note: Do not use R, do the calculations by hand. Three times per day, a student flips a fair coin, and if it is Heads they drink a coffee. We say a day is a "no-coffee" day if they do not drink any coffees that day. (a) [1 point] What is the probability that a day is a "no-coffee" day? (b) [1 point] What is the probability that in a week (7 days), there are 2...
Question (3) [4 Marks] Note: Do not use R, do the calculations by hand. A student...
Question (3) [4 Marks] Note: Do not use R, do the calculations by hand. A student is getting ready to take an important oral examination and is concerned about the possibility of having an "on" day or an “off" day. He figures that if he has an on day, then each of his examiners will pass him, independently of one another, with probability 0.8, whereas if he has an off day, this probability will be reduced to 0.4. Suppose that...
Note: For this Question, it may be necessary to use R to avoid LONG calculations and...
Note: For this Question, it may be necessary to use R to avoid LONG calculations and achieve the required precisions in both answers. 1. For the following pairs of (x,y) observations, (−2,−3),(3,3),(6,6),(7,6),(10,9) we are interesting in fitting the population regression model μy=α+β1x. Carry out the hypothesis test H0 β1=0 H1 β1≠0 Determine the value of the test statistic and the associated p-value. Test Statistic = p-Value = 2. For the data set we have the following (x,y) pairs of observations:...
Use R and your knowledge of the common probability densities we’ve talked about inclass to answer...
Use R and your knowledge of the common probability densities we’ve talked about inclass to answer the following questions.(a) A representative from PSU’s athletic department randomly selects PSU studentsoutside the HUB to see if they attended the last home men’s basketball game. Letp, the probability she selects such a person, be equal to 0.001, and letXdenotethe number of people she must survey until she finds such a person.i. What is the probability the representative must select 4 people to find...
2.Calculating probabilities and quantiles with RUse R and your knowledge of the common probability densities we’ve...
2.Calculating probabilities and quantiles with RUse R and your knowledge of the common probability densities we’ve talked about inclass to answer the following questions.(a) A representative from PSU’s athletic department randomly selects PSU studentsoutside the HUB to see if they attended the last home men’s basketball game. Letp, the probability she selects such a person, be equal to 0.001, and letXdenotethe number of people she must survey until she finds such a person.i. What is the probability the representative must...
***please use rstudio to answer question, I am unsure how to do these calculations with the...
***please use rstudio to answer question, I am unsure how to do these calculations with the program and do not need to know how to do them by hand*** Physicians at a clinic gave what they thought were drugs to 950 patients. Although the doctors later learned that the drugs were really placebos, 56 % of the patients reported an improved condition. Assume that if the placebo is ineffective, the probability of a patients condition improving is 0.55. Test the...
Question (2) [5 marks] (Use R) Suppose you have a company producing cupcakes. Each cupcake is...
Question (2) [5 marks] (Use R) Suppose you have a company producing cupcakes. Each cupcake is supposed to contain 10 grams of sugar. The cupcakes are produced by a machine that adds the sugar in a bowl before mixing everything. You believe the machine does not add 10 grams of sugar for each cupcake. If your assumption is true, the machine needs to be fixed. You stored the level of sugar of thirty cupcakes. Note: You can create a randomized...
Note: You need to show your work. If you choose to use Excel for your calculations,...
Note: You need to show your work. If you choose to use Excel for your calculations, be sure to upload your well-documented Excel and to make note in this file of what Excel functions you used and when you used them, and how you arrived at your answers. If you choose to do the work by hand, Microsoft Word has an equation editor. Go to “Insert” and “Equation” on newer versions of Word. On older versions, go to “Insert” and...
Use 4 decimal places in your calculations. Final answers may be approximated to 2 decimal places....
Use 4 decimal places in your calculations. Final answers may be approximated to 2 decimal places. 1. A candy company sells bags of candy that are supposed to have an average of 40 pieces per bag, with σ = 9 . A random sample of 94 candy bags shows the average number of candies per box to be 43.1. Using a 1% level of significance, test that the average number of candies per bag is more than 40. a. State...
Question 2 (30 marks) a. Find the point estimate of the average systolic pressure of all...
Question 2 a. Find the point estimate of the average systolic pressure of all female in the population. [3 marks] b. Construct the 95% confidence interval of the average systolic pressure of all female in the population. Briefly explain the confidence interval. [6 marks] c. Determine the margin of error of estimate for part (b). [2 marks] d. Find the 98% confidence interval of the average systolic pressure of all female in the population. What conclusion can be drawn from...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT