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BUS105 QUIZ qns

2 .   H 0 : S 1 ≠ S 2 . H 0 : μ d = 0 . H 0 : μ d ≤ 0 . When defining the probabilities in a normal distribution , which is the best estimate of P ( - 3.0<Z<3.0 ) for the standard normal distribution ? Use the Empirical Rule to determine your answer .
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Selected Answer: 0.0 1 Answers: 0.0 1 0.0 5 0.1 0 1.0 0
When executing an appropriate two sample means hypothesis testing, ________________ are characterized by a measurement, then some type of intervention, followed by another measurement. Paired samples are considered to be the same because the same individual or item is a member of both samples.
What is the median of the following set of scores?
Answers: 12 10 14 15 A _________ is a graphic presentation to portray the relationship between two variables.
When discussing a symmetrical, bell-shaped (normal) frequency distribution, what is the approximate percentage of observations that fall within plus and minus 1 standard deviations from the mean? Selected Answer: 68 % Answers: 50 % 68 % 95 %
99 % There is a five-step procedure that systematizes hypothesis testing. What is the first step?
If the null hypothesis in a hypothesis test includes the term "≥ ", then the test is a
Which is the closest estimated value of P(-2.0<Z<2.0) for the standard normal distribution? Use the Empirical Rule to determine your answer.
An online revision course is expected to improve learning in a statistics course. Similar tests were given before and after the online revision courses. The scores were captured as S 1 and S 2 respectively. The difference in scores is computed as d = S 2 –S 1 . Identify an appropriate null hypothesis to execute a hypothesis test. Selected Answer:
Answers: H 0 : S 1 S 2 . H 0 : S 1 S 2 . H 0 : μ d =0. H 0 : μ d 0. =
When defining the probabilities in a normal distribution, which is the best estimate of P(-3.0<Z<3.0) for the standard normal distribution? Use the Empirical Rule to determine your answer.
Which of the following is NOT a measure of variability?
_____ is a part of statistics that deals with estimating a population parameter based on a sample statistic.
Sample ratios When interpreting statistical measures, __________ is a single value computed from a sample and used to estimate a population parameter. Selected Answer: Point estimate Answers: Range Interval estimate Point estimate Confidence interval
_______ is a statement or claim about the value of a population parameter.