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# Which of the following is a false statement? A. 2-tailed t-tests always test for equality of the means.

Question Which of the following is a false statement? A. 2-tailed t-tests always test for equality of the means. B. The size of the rejection region is determined by alpha.C. We always test the alternate hypothesis. D. For large samples (n>30), a test of means can be based on the Z-distribution. E. You can never be 100% certain in the conclusion reached by a t-test

## Investor a’s portfolio consists of 400 shares of TEMO and \$3000 invested

Question Investor a’s portfolio consists of 400 shares of TEMO and \$3000 invested in a fixed deposit. The fixed deposit is guaranteed to yield 15% interest one year from now: so, every dollar invested now becomes \$1.15 one year from now. What is the probability that Investor a’s portfolio is worth at least \$8,000 one year from now?

## Test the effect of risk taking behavior, gender, and having work experience or not on entrepreneurial intention. Test if

Question Test the effect of risk taking behavior, gender, and having work experience or not on entrepreneurial intention. Test if entrepreneurial intention changes after taking entrepreneurship lecture. Test if there is some kind of association between having entrepreneurs in family or not and categorical entrepreneurial intention. Can you tell me which statistical datas will be used for each one and tell me the multiple regression interaction of first one

## 1. A regular four-sided die and a regular eight-sided die are rolled to form a sum.

Question 1. A regular four-sided die and a regular eight-sided die are rolled to form a sum. a.) Determine the probability distribution for the sum of the two dice. b.) Use a frequency histogram for the probability distribution. You may choose to use Excel for this. If you do, please include a copy of the graph.

## Suppose that the person in the next cube says to you “We have a really

Question Suppose that the person in the next cube says to you “We have a really strong theory that the relationship between Y and X in the population is positive, but I just computed the slope from my sample data and it is negative. That’s impossible. There must be a mistake!” Comment on whether this is impossible and why or why not. a.This is impossible since the relationship in the population must exist in the sample.b.This is possible since the relationship in the population does not necessarily exist in the sample.c.None of the above.d.This is impossible since the relationship in the sample must exist in the population.

## Earlier this week you were asked to take a survey and state weather

Question Earlier this week you were asked to take a survey and state weather or not you work full-time while also attending school. According to the community college research center at Columbia University, about 80% of community college students nationally work full time. We want to know if the percentage at Lansing Community College is statistically different than this national percentage. To complete this we will run a hypothesis test at a 0.05 level of significance. The results of our survey indicate that 43.8% of our statistics class works full time. A. Is it more appropriate to run 1-propZtest or a 2-propZtest in this instance? Why?B. State the null and alternative hypothesis.C. Run the hypothesis test using your calculator and state both the test-statistic and the p-value.D. What is the test decision and the conclusion in context drawn from the hypothesis test at a 0.05 significance level?E. What problems might be running this hypothesis test. For example, do we satisfy CLT? Are there any problems with using our class as a sample? Answer below using complete sentences.

## The mean amount of money that U.S. adults spend on food in a week

Question The mean amount of money that U.S. adults spend on food in a week is \$151 and the standard deviation is \$49. (a) Find the probability that a randomly selected U.S. adult spends more than \$200 on food per week. (b) Find the probability that a random sample of 50 U.S. adults spend an average of over \$170 per week. SHOW YOUR WORK

## Sara is a salesperson for​ Camera’s Etc., which is a retailer for​ high-end

Question Sara is a salesperson for​ Camera’s Etc., which is a retailer for​ high-end digital cameras.​ Historically, Sara has averaged selling 1.81.8 extended warranties per day for cameras that she sells. Assume the number of camera warranties that Sara sells per day follows the Poisson distribution. Complete parts a through d. a. What is the probability that Sara will sell sixsix extended warranties​ tomorrow?The probability that Sara will sell sixsix extended warranties tomorrow is nothing.​(Round to four decimal places as​ needed.)b. What is the probability that Sara will not sell an extended warranty​ tomorrow?The probability that Sara will not sell an extended warranty tomorrow is nothing.​(Round to four decimal places as​ needed.)c. What is the probability that Sara will sell more than twotwo extended warranties​ tomorrow?The probability that Sara will sell more than twotwo extended warranties tomorrow is nothing.​(Round to four decimal places as​ needed.)d. What is the standard deviation for this​ distribution?The standard deviation is nothing.​(Round to four decimal places as​ needed.)

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