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Question - Exercise and statistics exams. A study examined whether exercise affects how students perform on their final exam in statistics. The P-value was given as 0.38.
(a) State null and alternative hypotheses that could be used for this study.
(b) Do you reject the null hypothesis? State your conclusion in plain language.
(c) What other facts about the study would you like to know for a proper interpretation of the results?
A Travel Weekly International Air Transport Association survey asked business travelers about the purpose for their most recent business trip.
Directions: Be sure to make a copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English spelling and grammar. Sources must be cited in APA f..
Internet sites often vanish or move, so that references to them can't be followed. In fact, 13% of Internet sites referenced in papers in major scienti?c journals are lost within two years after publication.
A group of 20 sales associates agree to go through a week-long sales class to improve their productivity. The amount of their sales are computed for one month before and one month after the training course.
A firm's office contains 150 PCs. The probability that a given PC will not work on a given day is 0.05.
Generate a frequency distribution and histogram describing this information and comment on the extent to which some workers appeared to be receiving an especially high or low number of e-mails. Source: emailstatcenter.com, June 20, 2009.
a population has u100 and sigma20. if you select a single score from this populaton on the average how close woud it be
a. Construct a simple tabulation in which the counts are according to the type of engine. b. Construct a cross-tabulation describing the fleet, using type of engine and type of transmission as the categorization variables. c. Construct a display s..
When a large shipment of alternators is received at the plant, 100 are tested and if more than two are nonconforming, the shipment is returned to the alternator manufacturer. What is the probability of returning a shipment?
What's wrong? Each of the following statements contains a blunder. Explain in each case what is wrong.
a hypothesis test produces a t statistic of t 2.20. if the researcher is using a two-tailed test with a .05 how large
a worker at disneyworld in orlando is assigned the task of getting 100 guests to complete a survey about their
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