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A two-tailed test was conducted to determine if the mean age of gymnasts was equal to 16. The test value was 2.04 and alpha = 0.05. What is the p-value?A. 0.0414b. 0.0207c. 0.4793d. 0.0250
A random sample of 225 SAT scores has a mean of 1522. Assume that SAT scores have a population standard deviation of 300. construct a 95% confidence interval estimate of the mean SAT scores.
When the necessary conditions are met, a two-tail test is being conducted to test the difference between two populations proportions.
FBI Report do greater universities that tend to have more property crime. Keep a scatter diagram also sketch the line you think best fits the data.
Determine the regression equation. Interpret the equation. Do more bidders tend to increase or decrease the amount of the winning bid?
A particular medical operation proves fatal in 1% of the cases. Find an approximation to the probability that there will be at least 2 fatalities in 200 operations.
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
To test whether the significant difference between two sample variance using F-tests.
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
A school only accepts students with the top 20% of sat scores. The sat has a mean of 500 and a standard deviation of 100. what actual score should be used as the cut-off score?
State the research question and statistical null and alternative hypotheses; and Explain why this test is appropriate and why the correlation, t-test, regression, or ANOVA is not appropriate.
Is there evidence that mean dimension is not 221 mm? Suppose population is normally distributed. Use a=0.05 and critical value method.
What is the (a) Minimum number of doctors required so that at least 70% of the arriving patients can receive treatment immediately
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