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Use the-distribution and the sample results to complete the test of the hypotheses. Use a 5% significance level. Assume the results come from a random sample, and if the sample size is small, assume the underlying distribution is relatively normal.
Test null hypothesis: u = 100 vs alternative hypothesis: u < 100 using the sample results,x-bar = 91.7, s = 12.5 with n = 30.
Test- statistic = ?
p-value = ?
reject or do not reject null hypothesis?
suppose that 22.24 of all vehicles on the road get a fuel economy of at least 35 miles per gallon mpg. you conduct an
a. Write an appropriate model (including an effect for weeks) and the sources of variability in an analysis of variance table. b. How would your model change if we analyze the total 2-week sales data? c. Run an analysis of variance on the 2-week sale..
Ask them if they would be comfortable with a woman asking them out for a date. If the claim made by the study was true, what is the probability that: At most 4 men would say no?
The analysis of covariance (ANCOVA) is generally useful for _______________
Provided an example of a research problem at any organization that would benefit from the employ of either descriptive statistics or probability distribution statistics.
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 50 and a standard deviation of 6. A raw score of 47 is associated with what percentile?
The sample was of 2,058 ?rms, and the regression slope estimate was -0.051. The reported p-value was 0.034.13 What was the standard error of the slope estimate? Interpret the ?ndings.
The distribution of lifetimes for a certain type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the 33rd percentile of the distribution of lifetimes.
prince edward island fisheries and environment has been feeding a special food to rainbow trout fingerlings in a pond.
Consider a major FMCG manufacturer that wishes to add to its range of savoury crisps by introducing a new health food crisp that has added vitamins and minerals.
Complete row 3 of the table and find the mean for the random variable, "mu". Complete row 4 of the table and find both variance, and standard deviation
A random sample results in 1 = 20 with n1 = 100. The population standard deviation is σ1 = 6. Another sample was selected independently resulting in 2 = 22 with n2 = 100. The population standard deviation is σ2 = 7. Test that the population means ..
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