Let T be a linear transformation that maps Rn onto Rn. Show that T-1 exists and maps Rn onto Rn. Is T-1 also one-to-one? If so, prove it. If not, prove that instead.
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As a responsible statician (someone who practices statistics) you feel a need to tell him what he is doing wrong. Explain three things that he is doing wrong ( or that break some statistcal requirement).
Use a significance level of a=0.05 to test the claim that p1=p2. Use the given sample sizes and numbers of successes to find (a) the pooled estimate p, (b) the z statistic, (c) the critical z-values, and (d) the P-Value.
What are the values of the mean and the standard deviation for the standard Normal model?
A random sample of 50 price changes is selected from the many listed for a large super- market during a reporting period. If the probability that a price change is posted correctly is .93, Write an expression for the probability that three or fewer
The correlation between stride rate and speed was .996. Write the linear equation of best fit for predicting energy released from carbohydrates. Then, interpret the slope and y-intercept in context.
Using MINITAB test the hypothesis that the voting patterns are similar across year in school. Use a=0.05. Identify the parameters
The probability that an American CEO can transact business in a foreign language is 20%. 10 American CEOs are chosen at random. What is the probability that at least two, but no more than five can transact business in a foreign language?
In a sample of discharge of suspended solids from a phosphate mine, it was noted that the mean daily discharge was 27 mg/L and variance was 196. Assuming that the daily discharge is approximately normal
There is no evidence that the age distribution of Red Lake is different than that of Canada (P=0.81). There is very strong evidence that the age distribution of Red Lake is different than that of Canada (P=0.81).
A repeated-measures study comparing two treatments with n = 4 participants produces MD = 2 and SS = 75 for the difference scores. What is the estimated standard error for the sample mean difference?
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