No hypothesis test is 100% certain. Because the test is based on probabilities, there is always a chance of making an incorrect conclusion. When you do a hypothesis test, two types of errors are possible: type I and type II. The risks of these two errors are inversely related and determined by the level of significance and the power for the test. Therefore, you should determine which error has more severe consequences for your situation before you define their risks.Type I errorWhen the null hypothesis is true and you reject it, you make a type I error. The probability of making a type I error is α, which is the level of significance you set for your hypothesis test. An α of 0.05 indicates that you are willing to accept a 5% chance that you are wrong when you reject the null hypothesis. To lower this risk, you must use a lower value for α. However, using a lower value for alpha means that you will be less likely to detect a true difference if one really exists.Type II errorWhen the null hypothesis is false and you fail to reject it, you make a type II error. The probability of making a type II error is β, which depends on the power of the test. You can decrease your risk of committing a type II error by ensuring your test has enough power. You can do this by ensuring your sample size is large enough to detect a practical difference when one truly exists.
Signs of improvement are obtrusive inside the areas of Khayelitsha and metropolis bowl gardens: The metropolis Bowl is part of Cape town in South Africa.
Khayelitsha is the most important township in Cape town and is situated 30km southeast of the metropolis center, just off the N2. it's a colorful township known for its entrepreneurial spirit and social improvement tasks.
Khayelitsha has one of the highest costs of crime in South Africa. Its policing districts of website B, Harare, and Lingelethu West investigated 192 murders in 2018. similarly, 186 sexual offenses and 1 294 instances of theft with irritated occasions had been mentioned within the equal period.
Khayelitsha Township lies some 19km east of Wynberg and 25 km of the southeast of Cape city in the Western Cape. The call is of Xhosa starting place and means 'new domestic'. Then, top Minister, P.W. Botha promised fair treatment for Black folks that resided in city areas, even though he continued with influx management.
Learn more about Khayelitsha here: brainly.com/question/24925283
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Cold water currents flow from the poles to the equator
Answer:
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Explanation:
Flash floods are dangrous because
they have the destructive power of a normal flood combined with raging water, in addition to being unpredictable. Each year in the U.S., floods kill more people than hurricanes, tornadoes or lightning.
