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Normal approximation to the Binomial distribution.
At a certain community college, 60% of the students are female. If 300 students are randomly selected to be included in a survey, find the probability that at least 195 of the students are female.
At a 5% level of significance, is there enough evidence from this survey to conclude that more than half of all adults would rather have $100 than a day off?
How much do typical employee and his or her family spends per year on dental expenses? Sample of 45 employee reveals mean amount spend last year was $1,820, with standard deviation of $ 660.
Compute an F-statistic for each linear construct and determine its significance.
Develop a probability distribution for the number of students in the sample who watch soap operas.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
CASE STUDY: Are the Fish Safe to Eat? Assessing which Factors affect Mercury Levels in Fish in Maine Lakes.
College Students' Seating Choices and Motivation to Achieve.This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Each scenario involves randomly selecting n i observations from four, independent, Normal populations as described.
A stationery store wants to estimate the mean retail value of greeting cards that it has in its inventory. A random sample of 100 greeting cards indicates a mean value of $2.55 and a standard deviation of $0.44.
Does the data prove a significant difference in mean times?
Small bag of Skittles candies has following assortment: red (12), blue (5), orange (15), brown (0), green (16), and yellow (7). Create the probability distribution for x.
The information is reported below. Is it reasonable to conclude the percent is less now than five years ago?
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