In a study of 787 randomly selected medical malpractice lawsuits, it was found that 482 of them were dropped or dismisse Test the claim that most medical malpractice lawsuits are dropped or dismissed. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. Which of the following is the hypothesis test to be conducted? A. Ho: p=0.5 Ha: p>0.5 OC. Ho: p=0.5 Ha: p=0.5 O E. Ho: p=0.5 Ha: p<0.5 What is the test statistic? Z= .... (Round to two decimal places as needed.) B. Ho: p<0.5 Ha: p=0.5 D. Ho:p>0.5 Ha: p=0.5 OF. Ho: p0.5 Ha: p=0.5

Suppose that 20% of all copies of a particular textbook fail a certain bindingstrength test. Let X be the number among 5 randomly selected copies that fail thetest. Find ,the cumulative distribution function, the expectedvalues, the variance and the standard deviation

A genetic experiment involving peas yielded one sample of offspring consisting of 441 green peas and 126 yellow peas. Use a 0.01 significance level to test the claim that under the same circumstances, 25% of offspring peas will be yellow. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. What are the null and alternative hypotheses? О А. Но: р30.25 В. Но: р3D0.25 H1: p#0.25 H1:p0.25 H1:p>0.25 F. Ho: p#0.25 H1: p<0.25 Е. Hо: р#0.25 H1:p=0.25 What is the test statistic? (Round to two decimal places as needed.)

Based on long experience, an airline found that about 8% of the people making reservations on a flight from Miami to Denver do not show up for the flight. Suppose the airline overbooks this flight by selling 265 ticket reservations for an airplane with only 255 seats. (a) What is the probability that a person holding a reservation will show up for the flight? (c) Use the normal approximation to the binomial distribution and part (b) to answer the following question: What is the probability that a seat will be available for every person who shows up holding a reservation? (Round your answer to four decimal places.)

Human pregnancies of healthy singleton fetuses (i.e., excluding pregnancies with early-term complications or miscarriages, and multiple births) are normally distributed with a mean of 266 days and a standard deviation of 13 days. What is the probability that a baby is born between 250 and 275 days? If we stipulate that a baby is premature when born at least 3 weeks early, what is the probability a randomly selected baby is premature? If we stipulate that a baby is overdue when born more than 2 weeks after the expected date, what is the probability a randomly selected baby is overdue?

Assume that a simple random sample has been selected from a normally distributed population. Identify the null hypothesis, alternative hypothesis, test statistic, P-value (or range of P-value), critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim. Technology is dramatically changing the way we communicate. In 1997, a survey of 880 U.S households showed that 149 of them use e-mail. Use those sample results to test the claim that more than 15% of U.S. households use e-mail. Use a 0.01 significance level.

find test statistic AND p value

A genetic experiment involving peas yielded one sample of offspring consisting of 435 green peas and 174 yellow peas. Use a 0.05 significance level to test the claim that under the same circumstances, 26% of offspring peas will be yellow. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. What are the null and alternative hypotheses? O A. Ho: p#0.26 В. Но: р30.26 H4:p= 0.26 H1:p>0.26 Ос. Но: р#0.26 O D. Ho: p#0.26 H1:p>0.26 H1: p<0.26 O E. Ho:p=0.26 O F. Ho: p= 0.26 H1: p<0.26 H4: p#0.26 What is the test statistic? z= (Round to two decimal places as needed.) What is the P-value? P-value = (Round to four decimal places as needed.) What is the conclusion about the null hypothesis? O A. Fail to reject the null hypothesis because the P-value is less than or equal to the…

The p value & test statistic

47In a study of cell phone usage and brain hemispheric​ dominance, an Internet survey was​ e-mailed to 6986 subjects randomly selected from an online group involved with ears. There were 1306 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than​ 20%. Use the​ P-value method and use the normal distribution as an approximation to the binomial distribution. The test statistic is z = The p-value is _ Because the P-value is __ the significance level, __ the null hypothesis. There is __ evidence to support the claim that the return rate is less than 20%.