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1. The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
a. 0.10 b. 0.05 c. 0.01 d. 0.085
2. The F-distribution is:
a. symmetric
b. not symmetric, positively skewed
c. not symmetric, negatively skewed
d. None of the above.
Explain why random samples are preferred to nonrandom samples.
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has.
The population of lengths of aluminium coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.20 inches. A sample of four metal sheets is randomly selected from a batch. What is the possibility that t..
Calculate descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Calculate the value of beta for each stock.
Utilizing the .05 level, do the results support the psychologists' theory. Elucidate your answer to somebody whom has never had a course in statistics.
The chi-square goodness of fit is______________a one-tailed test with the rejection region in the right tail.
A researcher measures a response variable Y and explanatory variable X on each of several objects. A scatterplot of the measurements is as follows.
If a lot is known to contain 10% defective items, find out the probability that lot will be rejected? Accepted?
Distinct random variable
Determine for each variable if it is the explanatory variable, the response variable, or whether it could be both.
We assume that we have selected two independent random samples from populations having proportions p 1 and p 2 and that p-hat 1 = 800/1000 and p-hat 2 = 950/1000
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