The Agency for Healthcare Research and Quality reported that 53% of people who had coronary bypass surgery in the recent year were over the age of 65. Let X be the number of people over 5 years of age who had coronary bypass surgery. 15 coronary bypass patients are sampled,   a) Calculate the probability that exactly 9 of them are over the age of 65  b) Calculate the probability that less than 5 them are over the age of 65.

Q: The number of calls received by an office on Monday morning between 8:00 AM and 9:00 AM has a mean…

A: Answer: From the given data, Let X represent the number of calls received by an office on morning…

Q: What is the probability that a z-score will be 0.92 or less?

A: The objective of this question is to find the probability that a z-score will be 0.92 or less. In…

Q: Assume that when adults with smartphones are randomly selected, 36% use them in meetings or classes.…

A: Given: p=36%=0.36 n=8 According to binomial probability: PX=x=Cxnpx1-pn-x

Q: Assume that when adults with smartphones are randomly selected, 39% use them in meetings or classes.…

A: Ans# - Given, n =20, P = 39% = 0.39            Find   P(x = 12)  = ?

Q: A recent survey of 1050 U.S. adults selected at random showed that 625 consider the occupation of…

A: Out of 1050 randomly selected US adults, 625 consider the occupation of firefighter to to have very…

Q: Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes.…

A: Given ,Probability of using smartphones in meeting or classroom  , P = 0.46So,q = 1 - 0.46 = 0.54…

Q: Of 500 employees at a university, 45% are female. A sample size of 60 employees is chosen at random.…

A: Note: Use the finite correction factor if n/N is greater than 0.05. Therefore, the Finite…

Q: The mean height of women in a country (ages 20 - 29) is 64.1 inches. A random sample of 55 women in…

A:

Q: The table summarizes results from 983 pedestrian deaths that were caused by automobile accidents.…

A: Total number of pedestrian who's no  intoxicated =70+573=643 Total number of accident=983 We want to…

Q: The probability is (Type an integer or decimal rounded to four decimal places as needed.)

A: It is given that the number of observations are independent with the probability of success p = 46%…

Q: n insurance agent knows that 18% of deer-car collision claims are filed in November. Consider a…

A:

Q: What is the probability that a randomly selected score exceeds 1170?

A: Let X be the SAT score ( for verbal and math).It is given that X has normal distribution with mean…

Q: About 13% employed adults in the US held multiple jobs. Random sample of 74 employed adults is…

A: Given, About 13% employed adults in the US held multiple jobs. Random sample of 74 employed adults…

Q: A recent survey of 1090 U.S. adults selected at random showed that 685 consider the occupation of…

A: The question is about prop. Given : Randomly selected no. of adults ( n ) = 1090 No. of adults…

Q: n a survey of 1,772 U.S. adults, 294 said that they were very confident in the nutritional…

A: We know that  Sample size n= 1772  , total number of confident = 294 ,  X= 4

Q: Assume that when adults with smartphones are randomly selected, 41% use them in meetings or classes.…

A:

Q: According to the National Oceanic and Atmospheric Administration (AOAA) , the state of Colorado…

A: Determine the mean number of tornadoes per day. The mean number of tornadoes per day is obtained…

Q: A recent survey of 1010 U.S. adults selected at random showed that 687 consider the occupation of…

A: Probability: Probability is the ratio of favourable outcomes to all other potential outcomes of an…

Q: A recent survey of 1010 U.S. adults selected at random showed that 685 consider the occupation of…

A: We have to find given probability that a U.S. adult selected at random thinks the occupation of…

Q: Assume that when adults with smartphones are randomly selected, 36% use them in meetings or classes.…

A: We have to find given probability..

Q: About 78% of all female heart transplant patients will survie for at least 3 years. Sixty female…

A: From the provided information, Population proportion (p) = 0.78 Sample size (n) = 60

Q: What is the probability of randomly selecting someone whose heart rate either below 60 or above 90?

A: Population mean,  = 76Population standard deviation, σ = 5

Q: When making random guesses on an 8 question quiz the probability of guessing correctly on any one…

A:

Q: It is known that the customers of a hotel are 0.68 percent satisfied with the hotel. Accordingly,…

A:

Q: research team is working on a project to study the time (in seconds) for high school male runners to…

A: According to guideline we solve first three subparts only when given multiple subparts.

Q: Find the probability that more than 60 enrolled college

A: Let p be the probability that a student who graduated from high school in a recent year enrolled in…

Q: A recent survey of 1010 U.S. adults selected at random showed that 649 consider the occupation of…

A: General formula of probability is,  Probability = Number of favorable outcomesTotal outcomes

Q: A recent survey of 1010 U.S. adults selected at random showed that 647 consider the occupation of…

A: