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With a normal distribution of 50 and standard deviation of population =10, how do I figure out the score at the 40th percentile? How do figure out the % of scores falling above 70? How do figure out between what scores do the middle 50 percent of cases lie? Note N=1000
With each hypothesis, indicate whether the appropriate analysis would be a one-tailed test or a two-tailed test and indicate a type I and type II error, given the context of the hypothesis.
Given that R2 = 0.31, complete the ANOVA table. State conclusion about the regression relationship. Testing Hypothesis about the coefficients b3, b4, using alpha = 0.05.
Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?
According to the website of mars, 21% of m&m's produced are green. suppose 4 candies are selected at random and number of green recorded create a probability distribution for this situation.
M&M Milk Chocolate candies colors are not all the same proportion. Blue consist of 24% of the bag pieces while Brown & Red only 13% each. The following was found:
The sample yielded a mean content of 19.88 ounces with a standard deviation of 0.35 ounces. At 95% confidence using the p-value approach, test the hypothesis.
In each of the following scenarios, which would be larger, the mean or median, or would the mean and median be about the same? Provide reasoning--think about the shape of the histogram for the data and how the shape would affect the relationship b..
Research has shown that the people often see a correlation between two events when one does not really exist. Why do you think this happens?
The distance travelled (in km) by a courier service motorcycle on 40 trips were recorded by the driver. Define the random variable and the data type.
What is the probability that the person thinks that "Made in America" ads boost sales and uses social media online?
Use the significance level of alpha = .05 to test claim that p > .5. Sample is simple random sample n = 50. Illustrate how to compute beta for test and suppose true population proportion is .6.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
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