BUS 245 Final

communicate

An important component of any well executed statistical analysis is to clearly _____ the results

reject

If sample evidence is inconsistent with the null hypothesis, we ______ the null hypothesis

rejected

If the null hypothesis is ____, it suggests that the true parameter does not equal the hypothesized value

to resolve conflicts between two competing hypotheses on a particular population parameter of interest

Why do we use hypothesis testing?

test statistic

a sample based measure used in hypothesis testing

type I error

committed when we reject the null hypothesis when the null hypothesis is actually true

two tailed

defined when the alternative hypothesis includes the sign "≠".

alternative hypothesis

in a hypothesis test, contradicts the default state or status quo -used as a vehicle to establish something new

null hypothesis

in a hypothesis test, corresponds to a presumed default state of nature or status quo

one tailed

involves a null hypothesis that can only be rejected on one side of the hypothesized value

type II error

made when we do not reject the null hypothesis when the null hypothesis is actually fake

p

represents the proportion of observations with a particular attribute

confidence interval

sometimes used as an alternative method for conducting a two tailed hypothesis test

significance level

the allowed probability of making a type I error

p-value

the likelihood of obtaining a sample mean that is at least as extreme as the one derived from the given sample, under the assumption that the null hypothesis is true as an equality

qualitative

the population proportion p is the essential descriptive measure when the data type is _______

critical value approach

used when a computer is unavailable and all calculations must be done by hand

right tailed test

when the null hypothesis is rejected occurs on the right side of the hypothesized mean

left tailed test

where the null hypothesis can only be rejected on the left side of the hypothesized team