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Problem: Nickels falling over. You may feel that it is obvious that the probability of a head in tossing a coin is about 1/2 because the coin has two faces. Such opinions are not always correct. Stand a nickel on edge on a hard, flat surface. Pound the surface with your hand so that the nickel falls over.
Required:
1. What is the probability that it falls with heads upward? Make at least 50 trials to estimate the probability of a head.
a researcher studies 45 volunteer citizens from a small community and asks them about the amount of caffeine in
99.7% of the final game scores fall within what range, what percent of all final game scores did the pistons have more than 106 points?
worldwide it is understood that iq scores follow a normal distribution. it is assumed that the middle 95 of the
2800 people were surveyed about their recent purchases. 715 of those people surveyed bought a television within the last year, 461 bought a video game system within the last year, and 292 bought both.
The key steps to tests of significance are to state H0 and HA, calculate the test statistic, compute the p- value, and make a conclusion based on the given significance level.
Researcher has 100 test subjects to split into his treatment and control groups. In order to prove any causal relationship between treatment and outcome, he should:
six months ago you purchased 2800 shares of abc stock for 31.99 a share. you have received dividend payments equal to
the population mean and standard deviation are given below. find the required propability and determine wheather the
the number of yearly breakdowns for the power generator observed over the past 20 years at orlando utilities is
define the primary purpose of a linear correlation analysis. define the primary purpose of a linear regression. are
Based on this information, confidence level would be 90% that population mean is somewhere between?
Test the mean cholesterol content in the egg is greater than 2.5 percent
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