Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to John: infection occurs in 2% of operations, the repair fails in 12%of operations, and both infection and failure occur together in 1.28% of operations. What percentage, ?,of these operations succeed and are free from infection? Please round your answer to the nearest two decimal places.

Q: A sample of n = 9 scores has a mean of M = 20. One of the scores is changed and the new mean is…

A: The formula of the mean : Mean= sum of observationsnumber of observationssum of observations = meanM…

Q: Suppose that “X” represents the name of a disease. An epidemiologist conducts a survey of disease…

A: Yes, it is correct to concude women have twice the risk of disease X as men.

Q: In a one-tail test, the p-value is found to be equal to 0.0026. If the test had been two-tailed, the…

A:

Q: Since the discovery of the tiger gar population in Lake Richmond, the population of bluegill fish…

A: Since the discovery of the tiger gar population in Lake Richmond, the population of bluegill fish…

Q: is n if we take m goods and classify it as damaged or good. What is the value of m if we are to be…

A: Solution

Q: The manager of a big corporation finds out that on average, 40% of sick days are logged on Mondays…

A: Employees register 40% of sick days on Mondays and Fridays.  Now, we know, if Saturday and Sunday…

Q: to 10, where 0 represents the worst possible life and 10 represents the best possible life. The…

A:

Q: The following table shows data about heart attack deaths in a certain town over one year.…

A:

Q: A medical researcher says that less than 82% of adults in a certain country think that healthy…

A: Given that  A medical researcher says that less than 82% of the adults in certain country thinks…

Q: A biologist looked at the relationship between number of seeds a plant produces and the percent of…

A: The independent variable is seeds produced. The dependent variable is sprout percent. We have to…

Q: If you obtained a test score of 78 on a test with an average test score of your class is 70, and SD…

A: Given, -x = 70 SD = 4 n = 36

Q: In a study of over 15,000 teens, 62% of boys and 55% of girls consumed sugar-sweetened soda on the…

A:

Q: The table below shows the number of deaths in the U.S. in a year due to a variety of causes. For…

A: We have to find we can support claim or not.

Q: A population has µ = 50. Which value of o would make X = 55 an extreme value out in the tail of the…

A: Part 1: Given μ=50              To find for what value of σ, X=55 will be an extreme value In the…

Q: medical researcher claims that the proportion of people taking a certain medication that develop…

A:

Q: At a certain university, 22% of students fail general chemistry on their first attempt. Professor…

A:

Q: proportion of people taking a certain medication that develop serious side effects is 12%. To test…

A:

Q: On a psychology exam withµ= 76 and o = 12, Tom scored 9 points below the mean, Mary had a score of X…

A: From the provided information, Mean (µ) = 76 Standard deviation (σ) = 12 X~N (76, 12)

Q: What percentage of scores is between a z of ‐2 and a z of +2? Why is this important?

A: Use Empirical rule to solve it

Q: Suppose 30% of students at Florida University are business students. Of those, 31% are Business…

A: The percent of Florida University are business students is 30%, and there are 31% are Business…

Q: A random sample of 1012 adults in a certain large country was asked "Do you pretty much think…

A:

Q: If age were normally distributed, approximately what percentage of the sample would be older than 60…

A: 1. From the previous problem, the mean of the variable 'age' is 55.1 and SD is 5.3. Given that age…

Q: Mike must work at least 18 hous a week to supplement his income while attending school. He has the…

A: Let the number of hours Mike has to work in store 1 and store 2 be x1 and x2 respectively. To solve…

Q: A physician wants to test if temperature has an effect on heart rate. In order to do this, she…

A: Solution:From the given information, test statistic value is 5.627 and degrees of freedom is 10.The…

Q: he final grades for a statistics course are listed on the picture. answers must be in 4 decimal…

A: sample  x (x-x̄)^2 1 78 25.5025 2 75 4.2025 3 74 1.1025 4 84 122.1025 5 67…

Q: The results of a recent poll on the preference of teenagers regarding the types of music they listen…

A: Here is given that, two populations and two selected samples. We will use two proportion point…

Q: The Department of Health wishes to determine the percentage, p, of the general population who are…

A: Given : The test for Cooties is known to be 99% accurate given that a patient is infected and 90%…

Q: A medical researcher claims that the proportion of people taking a certain medication that develop…

A:

Q: A survey of 90 recently delivered women on the rolls of a county welfare department revealed that 27…

A: We want to find the Zcritical

Q: Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to…

A: Let us denote: A= infection  B= Repair fail  Given that P(A)=3%=0.03 , P(B)= 17%=0.17 P(A and…

Q: A federal report indicated that 11% of children under age 6 live in poverty in New Hampshire, an…

A:

Q: Two types of medical devices used for knee replacement are being studied to see if the type of knee…

A: Given, The infection rate for a specific bacterial infection after surgery for device A is 0.0043.…

Q: than driving.  Does the data support this claim?  What additional information and/or calculations…

A: *Answer:

Q: Country Financial, a financial services company, uses surveys of adults age 18 and older to…

A: a) Given that, x1=410  n1 =1000x2=315  n2=900The hypothesis is,H0 : p1-p2 =0  VS H1: p1-p2 ≠0The…

Q: study was done to look at the relationship between number of vacation days employees take each year…

A: Solution: Let x = Vacation days  and y = Sick days  x y xy x2 y2 2 10 20 4 100 7 3 21 49 9…

Q: The managers of a brokerage firm are interested in finding out if the number of new clients a broker…

A: Solution-: We have following data: Let, X=New clients and Y=Sales Broker X Y 1 27 5.32 2 11…

Q: The table below shows the number of deaths in the U.S. in a year due to a variety of causes. For…

A: Given The table below shows the number of deaths in the U.S. in a year due to a variety of causes.…

Q: A tax accountant would like to test the claim that the proportion of individuals who owe when filing…

A:

Q: d) Theth percentile corresponds to this score, which means that 299 is (Round to five decimal places…

A: Now finding the answer for (d) Given that the best score is 299 now we have to find percentile…

Q: A cognitive psychologist working in the area of suggestion asked a sample of children to solve as…

A: According to our answering guidelines, we can answer only first three subparts of a question and the…

Q: In a random sample of college freshmen, the proportion who use text messaging daily was 0.93. In a…

A: Given, In a random sample of college freshmen, the proportion who use text messaging daily was 0.93…

Q: According to Fidelity Investmest, the average weekly allowance A of children varies directly as…

A:

Q: Suppose that in a survey of 1,000 U.S. residents, 721 residents believed that the amount of violent…

A: From the provided information, Number of residents = 1000 721 residents believed that the amount of…

Q: According to Deloitte, through January 25,2006, the majority of companies reporting profits had…

A:

Q: In a class of 80 students, Heather has a rank of 16. At what percentile is she? Heather has a…

A: Heather has rank 16 in a class of 80 students. The number of students having rank after Heather is,…

Q: For a population with μ =100 and σ = 20, what is the X value corresponding to z = -0.50?

A:

Q: A new insecticide is advertised to kill more than 95% roaches upon contact.  In a laboratory test,…

A: Given,   The sample proportion is,

Q: A Life Insurance Company founded upon the Indian Experience Table has a thousand policies averaging…

A:

Q: A study done in 1997 showed that 4.2% of mothers smoked cigarettes during their pregnancy. An…

A: Given Data: p^=10/200=0.05n=200   Null and Alternate Hypothesis: H0: p=0.042 Ha: p>0.042

Q: (d) How high a score must you have in order to be in the top quarter of the population in social…

A: (d) The high score for order to be in the top quarter of the population in social insight is,…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.