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In testing the hypotheses H0:π =0.40, : 0.40 a H π > at the 5% significance level, if the sample proportion is .45, and the standard error of the sample proportion is .035, the appropriate conclusion would be:
A) to reject 0 HB) fail to reject 0 HC) to reject a HD) fail to reject HaE) None of the above
Secondhand smoke is somewhat harmful or very harmful. Is there statistically significant evidence against the representative's claim? Why or why not?
White blood cell counts for a group of volunteers before being innoculated, and white blood cell counts for a second group of volunteers after being innoculated.
Find the P-value that would be used to determine if the percentage of customers who prefer mint chocolate chip ice has increased at a 5% level of significance.
Suggest one psychological research question that could be answered by each of the following types of statistical test:
In study of a clinical for an allergy drug 115 of the 204 subjects reported experiencing important relief from their symptoms.
Make a probability distribution chart using reduced fractions to show the following information: The chart below shows the number of committee members who attended a meeting.
Determine the probability that person selected has blood type O? Given that person selected is a male, determine the probability that their blood type is AB?
Explain to someone who knows no statistics why the two polls can give such widely differing results and which poll is likely to more reliable.
A marketing agency has developed three vacation packages to promote a timeshare plan at a new resort. They estimate that 20% of potential customers will choose the day plan
What is the critical value of the Chi-square? Compute the value of Chi-square. What is your decision regarding H0?
What quantitative method can be applied to help the Department make the decision? Outline how this method can be applied and explain how a qualitative method can also be applied to help the Department make the decision
It is known that in a sack of mixed bean seeds, 35% are yellow beans. Use the normal approximation to the binomial distribution to find the probability that in a sample of 400 beans there are
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