A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second source. The sample mean was 99 and the standard deviation was 6. Conduct a test of the hypothesis using the .04 level of significance.

Testing hypothesis of annual income of teachers : Test the hypothesis that the annual income of teachers in areas of more than 500,000 is significantly more than those in areas of less than 100,000. Use the 5% level of risk. |

Describe how environmental change : Describe how environmental change and natural selection combine to shape a population's range of traits and explain how these patterns influence the direction of evolution. |

Distinguish these plants from the stones they mimic : Lithops, also called Stoneplants, are a type of plant that resembles little stones. These plants have the ability to blend in with their surrounding, which affords them protection from predators. If you were in an area containing Lithops. |

Draw an entity-relationship diagram : Draw an Entity-Relationship Diagram (ERD) for the data storage requirements of a business described in the case study and Data Model Transformation. |

Hypothesis testing-compute statistical test : A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5. |

Discuss performance appraisal and evaluation consideration : Explain employee training and develop practices. Discuss the performance appraisal and evaluation consideration? |

Find test value for hypothesis : This semester a sample of 55 students revealed an average cost of books of $415 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis? |

What is the half life of radioactive iodine : the half life of a radiative carbon is 5700years, if the radioactive material left in the storage has activity of 5ci, what will be the activity after 3000years? |

Describe what segmentation is : Describe what segmentation is and discuss different segmentation bases you could use for your product/service |

## Probability distribution of temperatureHigh temp for January 1st is normally distributed with a mean of 40 degrees and a standard deviation of 5 degrees. |

## Probability that all individuals have alzheimer-s diseaseSuppose an unrelated 77-year old man, 76 - year old woman, and 82- year old woman are selected from a community. What is the probability that all three of these individuals have Alzheimer's disease? |

## Average weight of all passengersA transatlantic plane carries 140 passengers. It is known that the average weight of all passengers on that plane is 147.14 pounds, that the men on that plane weigh on the average 170 pounds, and women 130 pounds. How many men and how many women w.. |

## Ethics in professiional decsiion-mkaingWhat is ethics? Ethics is basically concerned with the Moral obligations, responsibilities and social justice of the world. It invokes the idea of "how people should act". |

## Last week tom had exams in statisticsGive an ending for the below statement.Last week Tom had exams in Statistics and in English. He scored 10 points above the mean on both exams. From this information, you can conclude. |

## Confidence interval estimating the population meana. Is there evidence the mean amount is different from 1.0 gallon (alpha= 0.01)? b. Compute the p-value and interpret its meaning. c. construct a 99% confidence interval estimate of the population mean amount of paint. |

## What are the control limits for an chartA company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart |

## Perform the tukey test for additivity of blockThe factorial structure of treatments. What does this plot recommend about suitability of no-interaction assumption here? |

## Regression analysis of bulgariaNeed help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used. |

## Mean total scoreThe Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05.. |

## Conclusion regarding salesperson performanceA sales person at a company sold 6,903,435 of hardware equipment last year, a figure that represented the eighth decile of sales performance at the company. What can you conclude about the salesperson performance? |

## Decision theory-minimax and maximax principleDecision making under risk is the same as decision making under uncertainty because in both the probabilities are unknown. |

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