You are conducting a trial of new medications to improve lung function in cystic fibrosispatients. 78% of your enrolled patients receive medication Z while the rest receive the more costly medication T. Of those receiving medication Z, 68% show improved lung function while for those patients on medication T, 92% improve. Calculate the probability of improving overall.

Q: Use a two-proportion Z-test to determine if the proportion of people who responded positively to the…

A:

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: Find the z-score that cuts off 70% in the body on the right.

A:

Q: There is a 35% chance that it will be sunny tomorrow. What are the chances that it will not be…

A: Given Data: The percentage chances that it will be sunny tomorrow is: P=35% The percentage of…

Q: In 2016 the Better Business Bureau settled 80% of complaints they received in the United States.…

A: The objective of this question is to calculate the expected value and standard deviation of the…

Q: If the probability of having rain tomorrow is 40%, what is the probability of not having rain…

A: It is given that  P( rain tomorrow ) = 40%

Q: A poll showed that 68.5% of Americans say they believe that Marilyn Monroe had an affair with JFK.…

A: Given information- Percentage of Americans believe that Marilyn Monroe had an affair with JFK =…

Q: Alex is 80th in his class of 320 students. What is his percentile rank in class?

A: Data given p=80, n=320

Q: What is the probability a woman has breast cancer given that she just had a positive test?

A: Given,  1% women have breast cancer 85% chance of having breast cancer and test positive(true…

Q: You are Vice President of Ticket Sales for Toronto FC. The average price of ticket is $20, and you…

A: It is given that the average price of the ticket is $20. It is expected to sell 8000 tickets on any…

Q: Shanice is a star player for her women's basketball team. She has injured her ankle, and it is…

A: Given, If Shanice can play, the coach estimates that the team a score of 91 points. If Shanice is…

Q: John calculated r -.44 for a set of n 10 pairs of values that represent the number of absences from…

A: Given that r = -0.44 midterm exam score ( y )   number of absences from class (x)

Q: 4% of visitors make donations. on a certain day, the museum has 175 visitors. find the expected…

A: The expected number of donations is obtained below as follows:   The conditions for the normal…

Q: In 2016 the Better Business Bureau settled 80% of complaints they received in the United States.…

A: Given, in 2016 the Better Business Bureau settled 80% of complaints they received in the United…

Q: Alex makes 20% of his hockey goals that he attempts.  For a practice, he likes to shoot goals at the…

A:

Q: A gardener buys a package of seeds. Seventy percent or seeds of this type germinate. The gardener…

A: It is given that n =80 and p =0.70.

Q: After six biology tests, Ruben has a mean score of 76. What score does Ruben need on the next test…

A: After 6 biology tests :  Mean = 76  After next test : ( biology test will be 7 now )  Mean =78…

Q: A poll showed that 50.9% of Americans say they believe that some psychics can help solve murder…

A:

Q: A mail order company has a 7% success rate. If it mails advertisements to 636 people, find the…

A: Givenp=0.07n=636let "x" be no. of getting salesx~Binomial(n=636,p=0.07)P(X=x)=(nx)px(1-p)n-x  ;…

Q: We are interested in analyzing data related to college football. Use S to denote the team is in the…

A: Given information- We have given that the probability of team is in the S = 5.5% So, the probability…

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050 females, 746…

A: There are two dependent variables which are males and females. The independent variable is using of…

Q: A poll showed that 69.3% of Americans say they believe that statistics teachers know the true…

A:

Q: A distribution of English exam scores has u = 70 and o = 4. A distribution of history exam scores…

A:

Q: The probability of a can of paint containing contaminațion is 4.23%. The probability of a mixing…

A: We have given that  Probability of containing contamination is A= 4.23% The probability of a mixing…

Q: The test for a certain disease is 86% accurate.  A hospital tests a sample of 5000 patients for this…

A: Accuracy of the test is 86% Inaccuracy of the test = 14% N = Total number of patients = 5000…

Q: We are interested in analyzing data related to college football. Use S to denote the team is in the…

A: Given information- We have given that the probability of team is in the S = 5.5% So, the probability…

Q: 1. Assuming the chewing gum company's claim is true, what is the probability that fewer than 78% of…

A: Introduction:Denote p as the true population proportion of dentists who recommend the chewing gum…

Q: Roy is 4 years old and in the 69th percentile for neight in his age group. Vhat does this mean? Roy…

A: The percentile is used to measure the location of a data set.

Q: Willie has an average (mean) of 83.2 on the first five exams. What is the least he can score in…

A: Need to find out least that the student can score in order to have an average of 85.

Q: Allie has 5 exam scores 98, 94, 84, 95 and 95 in math class. What score does she need on the final…

A: According to questionAllie has 5 exam scores 98, 94,84,95 and 95 in math classWe have to calculate…