Q1) A high school counselor wishes to see if the average number of dropout in his school is 18.He reviews the last 17 years and finds that the number of dropouts each year is as shown. Test her claim at the .01 alpha level.

12 18 24 16 21 20 18 19

19 22 25 16 18 19 19 20 23

Q2) Test the teachers hypothesis that there is a significant difference between the pre and post tests.

Q3) Test the hypothesis that there is significant difference on the post test scores between sections A and B.

P-value for a test of the school claim : A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random sample of 130 of the school's students, 32% of them plan to go into general practice. Find the P-value for a test of the s.. |

Calculate its empirical formula : Explain why the boiling point of an aqueous solution that is 1.0 m in glucose (C6H12O6) is 100.51oC whereas The boiling point of an aqueous solution that is 1.0 m in NaCl is 101.02 oC . |

Data collection process : A part of our research design is the data collection process. We often do this by sampling. Differentiate between random and nonrandom sampling methods. |

Define validity and reliability : Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important? |

Teachers hypothesis-pre and post tests : Test the teachers hypothesis that there is a significant difference between the pre and post tests. |

Important information about risk reduction : A person reads a research study of the effectiveness of perineal exercises in preventing urinary incontinence and notes that the number of subjects in each group is 120. |

Calculate the molar mass of the liquid : calculate the estimated ratio of the protonated form of acetylsalicylic acid to the deprotonated form of aspirin at equilibrium in the stomach? acetylsalicylic acid(Aspirin) is a weak acid with a pKa = 3.4, Stomach acid has pH = 1.4. |

Accumulation of protein in the er : A young man was brought to the hospital suffering an unknown disease. Unfortunately, the young patient did not make it. Upon examination of his liver cells it was determined that the liver cells were extremely unhealthy. |

Calculate the value of delta h : NH3(Ammonia ) is widely used in many household cleaners and as a fertilizer. Calculate How much ammonia (in units of mol) is produced when 7.8 mol of H gas react with an excess of N gas. |

## Statistics-probability assignmentMATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th.. |

## What is the least numberMATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary? |

## Determine the value of kMATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form |

## What is the probabilityMATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa? |

## Binomial distributionsMATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions. |

## Caselet on mcdonald’s vs. burger king - waiting timeCaselet on McDonald’s vs. Burger King - Waiting time |

## Generate descriptive statisticsGenerate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data. |

## Sampling variability and standard errorProblems on Sampling Variability and Standard Error and Confidence Intervals |

## Conduct a marketing experimentConduct a marketing experiment in which students are to taste one of two different brands of soft drink |

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