Reference no: EM131118184
Part A: Fill in the blank (1-26)
1) The purpose of hypothesis testing is to aid the manager or researcher in reaching a (an) __________________ concerning a (an) _____________ by examining the data contained in a (an) _______________ from that ____________________.
2) A hypothesis may be defined simply as __________________________________________.
3) There are two statistical hypotheses. They are the _________________ hypothesis and the _________________ hypothesis.
4) The statement of what the investigator is trying to conclude is usually placed in the _________________ hypothesis.
5) The _____________ hypothesis is the hypothesis that is tested.
6) If the null hypothesis is not rejected, we conclude that the alternative _________________.
7) If the null hypothesis is not rejected, we conclude that the null hypothesis _____________.
8) A Type I error occurs when the investigator _____________________________.
9) A Type II error occurs when the investigator _____________________________ .
10) The probability of committing a Type I error is designated by the symbol ____________, which is also called the ___________________.
11) Values of the test statistic that separate the acceptance region from the rejection are called _________________ values.
12) The following is a general statement of a decision rule: If, when the null hypothesis is true, the probability of obtaining a value of the test statistic as____________ as or more _______ than that actually obtained is less than or equal to , the null hypothesis is____ _________. Otherwise, the null hypothesis is ______________________ .
13) The probability of obtaining a value of the test statistic as extreme as or more extreme than that actually obtained, given that the tested null hypothesis is true, is called ____________ for the ________________test.
14) When one is testing H0: µ= µ0 on the basis of data from a sample of size n from a normally distributed population with a known variance of σ2 , the test statistic is ____________________________________________________.
15) When one is testing H0: µ= µ0 on the basis of data from a sample of size n from a normally distributed population with a unknown variance, the test statistic is ___________________________________________________.
16) The null hypothesis contains a statement of __________________________________.
17) The statement µ ≥ 0 is an inappropriate statement for the ____________ hypothesis.
18) The rejection region consists of those values of the ______________ that will cause rejection of the null hypothesis.
19) The null hypothesis and the alternative hypothesis are ____________ of each other.
20) Given , H0: µ= µ0, then Ha : ___________________________________ .
21) Given H0: µ ≤ µ0, then Ha : ___________________________________ .
22) Given H0: µ ≥ µ0, then Ha : ___________________________________ .
23) A statement of what you wish to conclude goes in the ______________.
24) A market analyst believes that more than 30% of the adults in a certain area regularly read a certain magazine. The analyst wishes to conduct a hypothesis test to see whether this belief will be supported. The appropriate statistical hypotheses are: __________________.
25) Given: H0: µ ≥ 50; Ha: µ < 50; α = 0.05. A simple random sample of size 64 is drawn from a non-normally distributed population. X‾= 45, s2 = 256. The computed value of the test statistic is _________________, which is compared for significance with a value from the ____________________ distribution.
26) Given: H0: µ= 100; Ha: µ ≠ 100; α = 0.03; computed z = 2.25, p = 0.0244. The null hypothesis should reject because _______.
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