(Because the number of horses varies from year to year, only the first 10 post positions are included.) Use a 0.05 significance level to test the claim that the likelihood of winning is the same for the different post positions. Based on the result, should bettors consider the post position of a horse race? 1 2 3 4 Post Position 5 6 7 8 9 10 20 13 10 Wins 14 14 7 9 11 4 11 Determine the null and alternative hypotheses. Ho: H₁: Calculate the test statistic, x². x² = (Round to three decimal places as needed.). Calculate the P-value. P-value= (Round to four decimal places as needed.) What is the conclusion for this hypothesis test? of the claim that the likelihood of ning is the same for the different post positions. O A. Reject Ho. There is insufficient evidence to warrant OB. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that the likelihood of winning is the same for the different post positions.. OC. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim that the likelihood of winning is the same for the different post positions. OD. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the likelihood of winning is the same for the different post positions. Based on the result, should bettors consider the post position of a horse race? O No Yes 0

A. Suppose we want to test whether or not three means are equal. We want to perform this test with a 8% significance level.If we perform an ANOVA test, what is the probability of the test producing accurate results (avoiding a Type I error)? B. Suppose we, instead, run three separate hypothesis tests (t-tests), each with 8% significance level. Mean 1 = Mean 2Mean 1 = Mean 3Mean 2 = Mean 3What is the probability that all three tests would be accurate? C. Why is an ANOVA test more accurate than 3 different tests?

The null hypothesis in the test for goodness of fit is that   a.  the data fit the expected frequencies.   b.  the data do not fit the expected frequencies.   c.  the variables are independent.   d.  the variables are dependent.

Passed Failed White Results from a civil servant exam are shown in the table to the right. Is there sufficient evidence to support the claim that the results from the test are discriminatory? Use a 0.05 significance level. 16 14 candidates Minority candidates 7 21 Determine the null and alternative hypotheses. O A. Ho: White and minority candidates do not have the same chance of passing the test. H4: White and minority candidates have the same chance of passing the test. B. Ho: A white candidate is more likely to pass the test than a minority candidate. H,:A white candidate is not more likely to pass the test than a minority candidate. Ho: A white candidate is not more likely to pass the test than a minority candidate. H,: A white candidate is more likely to pass the test than a minority candidate. D. Ho: White and minority candidates have the same chance of passing the test. H,: White and minority candidates do not have the same chance of passing the test. Determine the test…

Refer to the sample data for​ pre-employment drug screening shown below. If one of the subjects is randomly​ selected, what is the probability that the test result is a false​ positive? Who would suffer from a false positive​ result? Why?   Pre-Employment Drug Screening Results   Positive test result Negative test result     Drug Use Is Indicated Drug Use Is Not Indicated Subject Uses Drugs 42 11 Subject Is Not a Drug User 17 34

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The coach of a basketball team thinks the referee is using a weighted coin to decide which team gets the ball. He looks at the last 140 coin tosses and observes that there were 85 heads and 55 tails. Answer the following questions. (1) What is the null hypothesis? a. The observed frequency is not different than the expected frequency, meaning that the coin is biased b. The observed frequency is not different than the expected frequency, meaning that the coin is fair. c. The observed frequency is different than the expected frequency, meaning that the coin is fair. d. The observed frequency is different than the expected frequency, meaning that the coin is biased. (2) What is the calculated value of chi-square? (3) How many degrees of freedom are there? (4) Assuming alpha is equal to .05, what is the critical value? (5) What is your decision? a. Fail to reject the null and decide that the coin is fair. b. Fail to reject the null and decide that the coin is biased. c. Reject the null and…

a statistics instructor belives that fewer than 25% of NRCC students have a cable TV subcription and instead prefer streaming content. What is the correct NULL hypothesis for this scenario? a. p< .25 b. p< or equal to .25 c. p >.25 d. p > or equal to .25

Is the following a null or an alternative hypothesis? Iced coffee tastes better than hot coffee.

What are the null and alternative​ hypotheses? A.H0​: The racial distribution is the same in at least two of the four regions. Ha​: The racial distribution is not the same in at least two of the four regions.   B. H0​: The racial distribution is the same in each of the four regions. Ha​: The racial distribution is not the same in each of the four regions.   C. H0​:The racial distribution is not the same in each of the four regions. Ha​:The racial distribution is the same in each of the four regions.   D. H0​: The racial distribution is not the same in at least two of the four regions. Ha​: The racial distribution is the same in at least two of the four regions. Find the test statistic.   χ2= ​(Round to three decimal places as​ needed.)   Find the​ P-value.   P= ​(Round to three decimal places as​ needed.) Choose the correct conclusion below.     A. Do not reject H0. The data do not provide sufficient evidence that there is a difference.   B. Do not reject…