Statistics Assignment

Please answer the following questions using your own words and using the only the attached chapters for reference and in text citations. Answers must be 200 words.

Introductory Statistics Reference

Mann, P. S. (2016). Introductory Statistics (9th ed.). Retrieved from The University of Phoenix eBook Collection database.

Chapter 1

1. Describe the two meanings of the word statistics. Explain the types of statistics.

2. Explain the meaning of an element, a variable, an observation, and a data set.

Chapter 2

3. Why do we need to group data in the form of a frequency table? Explain. How are the relative frequencies and percentages of categories obtained from the frequencies of categories? Illustrate with the help of an example.

Chapter 3

4. Explain how the value of the median is determined for a data set that contains an odd number of observations and for a data set that contains an even number of observations. Briefly explain the meaning of an outlier. Is the mean or the median a better measure of center for a data set that contains outliers? Illustrate with the help of an example.

## A decision maker is interested in estimating a populationa decision maker is interested in estimating a population proportion. a sample of size n 150 yields 115 successes. |

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## Accounts holders in a particular branchA large bank has 4500 accounts holders in a particular branch. The rupees amount of these accounts are known to be normally distributed with a mean of Rs. 60,000 and a standard deviation of Rs. 1000. |

## Determine the marginal densities of coordinatesPoint is uniformly distributed in the unit sphere in three dimensions. a) Determine the marginal densities of the x, y, and z coordinates. |

## Confidence interval for the true average number of monthsCompute a 99% confidence interval for the true average number of months taken by bankruptcy petitioners to acquire debts listed on their petitions. |

## During the 2005 major league baseball seasonDuring the 2005 Major League Baseball season, Derrek Lee had a 0.335 batting average. Construct a binomial probability distribution for the number of successes (hits) for four official at bats during this season. |

## Construct the corresponding relative frequency distributionProvide an appropriate response. The frequency distribution for the weekly incomes of students with part-time jobs is given below. Construct the corresponding relative frequency distribution. |

## A simple random sample without replacement of 30 householdsa simple random sample without replacement of 30 households was drawn from a city area containing 14 848 households. |

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