Stats exam 1 - Study guides, Class notes & Summaries

Intro to Stats Exam 1 SLCC

Business Stats Exam 1 with 100% verified solutions The mean of a sample is? - answerComputed by summing all the data values and dividing the sum by the number of items In a cumulative frequency distribution, the last class will always have a cumulative frequency equal to? - answerThe total number of elements in the data set Since a sample is a subset of the population, a percentage that is calculated from the sample data... - answerCan be larger, smaller, or equal to the corresponding per...

STATS EXAM 1QUESTIONS AND ANSWERS

Bio Stats Exam 1

Biostats Exam 1 - Research Designs and Statistical Concepts

Discrete variables are counted or measured? Ans: Counted Continuous variables are counted or measured? Ans: Measured Which is NOT a continuous variable? a) person's ht each year b) volume of water in a swimming pool each day c) cars manufactured in a factory in a month d) person's wt on each birthday Ans: C Which is NOT a discrete variable? a) ht of sunflower every day b) number of students absent from school c) number of watches sold in a business d) number of people running th...

STATS 250 Week 12 Final Exam 2023 – Questions and Answers Rated 100%. Favorite Subject Area – A random sample of 300 students were asked which of three areas he or she preferretaking liberal arts courses, 1 = Math/Science, 2 = Social Science, or 3 = Humanities. The data were further broken down to compare the results by gender. The results are provided in the following table. Preferred Area for Liberal Arts Courses Gender 1 = Math/Science 2 = Social Science 3 = Humanities Total Male 37 ...

Bio Stats Exam 1

Biostats Exam 1 - Research Designs and Statistical Concepts

Prob and Stats Exam 1 Questions & Answers 2023/2024 The life of the battery of a certain laptop (between charges) is normally distributed with a mean of 20 hours and a standard deviation of 3 hours. What is the probability that the battery of the laptop will last for between 14 and 23 hours? - ANSWER-μ=20 σ=3 z=x-μ/σ z=14-20/3 z=23-20/3 P(-2<=Z<=1) φ(1)-φ(-2) The event A has a probability of 2/3 and there is a probability of 3/4 that at least one of the events A and B ...