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A researcher demonstrated a correlation of r = 0.60 between teacher attire and student academic performance across 150 grade schools in her state. She concluded that encouraging teachers to be properly attired will increase academic performance. Do you agree or disagree with her conclusion? Why?
She wants to test H0: μ = 0.5 Ha: μ ≠ 0.5 Find the associated P-value. Is the result significant at the 5% level (α = 0.05)? At the 1% level (α = 0.01)?
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
You're considering an investment in the common stock of Crisp Cookware. The stock is expected to pay a dividend of $2 a share at the end of the year (D1 = $2.00). the stock has a beta equal to 0.9.
For the following data set, indicate whether the shape of the distribution is normal, positively skewed, or negatively skewed. Provide evidence for your answer by calculating the mean, mode, and median.
In a class of 40, 16 driver a car made outside the United States. What is the confidence interval for the total population of students at the 95% level?
An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval
A process is out of control when:
Assume we interested in relationship between the age of individual, as measured by visits. Suppose after selecting 15 members the observation:
Suppose that bank has made a large number of loans of a certain type. The one year probability of default each loan 1.2%. The bank uses a Gaussian copula for time to default.
If a single card is drawn from an ordinary deck of cards, what is the probability of drawing either a heart or a 6? (Answer in a fraction).
Find out the critical value for the given degrees of freedom of the F-test also the lower-tailed critical value of F test for the similar level of significance
A Statistic professsor plans classes so carefully that the lenths of her classes are uniformly distributed between 46.0 and 56.0 minutes. Find the probability that a given class runs less than 51.5 minutes. Find the probability of selecting a clas..
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