Suppose that we investigate the effects of some drug on Alzheimer disease and the probability of each drug being effective is 10%. Calculate the following : The probability that we find the first effective drug in the first 10 experiments( each experiment is with a new drug). The probability that the first effective dug is the 5th one that we examine. Name the distribution.

Q: A disease has a prevalence of 11%. A diagnosis has 85% probability of correctly identifying the…

A: Let D=The Person has the disease. Dc=The person doesn't have the disease. P=The person is tested…

Q: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth $1600,…

A: Given: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth…

Q: It is found that the probability that a person has brown eyes is 61.66%. Considering a group of 412,…

A:

Q: Solve the problem. Round to the nearest hundredth of a percent if needed. Use of the internet for…

A:

Q: A doctor is interested in the proportion of patients which live at least 5 years after being…

A: sample size n=196proportion mean =proportion the standard deviation is ==0.028561) it follows normal…

Q: A police department reports that the probabilities that 0,1,2,3 burglaries will be reported in a…

A:

Q: A writer averages 0.5 errors per page. The number of errors follow a Poisson distribution. Find the…

A: A writer averages 0.5 errors per page.The number of errors following a Poisson distribution.Let X be…

Q: A racing car is one of the many toys manufactured by Mack Corporation. The assembly times for this…

A: Mean()=55standard deviation()=4The company closes at 5 P.M every day

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

A: Solution: Let X be the weights of steers in a herd. From the given information, X follows normal…

Q: 3. A surgical technique is performed on ten patients. You are told there is an 83% chance of…

A: Givenn=10p=0.83

Q: You randomly select 25 teachers. What is the probability that their mean salary is more than $70000,…

A: Given thatRandomly select 25 teachersPopulation mean salary is 56000Standard deviation 15000To…

Q: Births are approximately uniformly distributed between the 52 weeks of the year. They can be said to…

A:

Q: What is the probability that a randomly selected survey participant prefers the NFL? (Round to four…

A: Note : According to our guidelines we are solving only first three sub-parts of a question and the…

Q: the age of Subject #101 is 71. Divide that age by 10 and put a % on it.  That is the probability of…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: In computing the mean and variance of a probability distribution, it is very important to follow the…

A: In Computing Mean and Variance first we need to define a valid pmf or pdf of which the mean is to be…

Q: For each probability and percentile problem, draw the picture. The speed of cars passing through…

A:

Q: Maddie teaches a class in which grades on an exam are normally distributed with a mean of u=100 and…

A:

Q: The weights of steers in a herd are distributed normally. The standard deviation is 200 lbs and the…

A: From the above given data the following solution is provided below:

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: The average amount of students who ride the bus each year and Wilton Iowa is 60 students. The…

A: Given,   Mean = 60 Standard deviation = 5   The objective is to find the required probabilities.

Q: Suppose 57% of the population has a college degree. If a random sample of size 770 is selected,…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

A:

Q: The average amount of snow per year in Whiteville is 32 inches. The standard deviation is 4 inches.…

A:

Q: Based on a​ poll, among adults who regret getting​ tattoos, 13​% say that they were too young when…

A: The objective of this question is to find the probability of certain outcomes when nine adults who…

Q: Jalen Hurts' pass completion percentage last season was 61.3%. Based on relative frequency…

A:

Q: n = 143 is the number of M&Ms in my bag and x =6 is my count for Green M&Ms. Using the sample of n…

A: Answer :- Given,  n = 143 is the number of M&Ms in my bag                  and x =6 is my count…

Q: Gülce spends 8 hours for Roblox per day. If the probability of spending less than 6 hours in a…

A:

Q: Does it seem to you that people tend to be absent more on some days of the week than on others?…

A: The categorical variable is day of the week. We have to test whether absences by the firm’s…

Q: If the probability that a randomly chosen college student takes statistics is 0.34, then what is the…

A: The probability that a randomly chosen college student takes statistics is 0.34. The probability…

Q: A population proportion is 0.5. Suppose a random sample of 658 items is sampled randomly from this…

A: Given that : Population proportion =0.5 Random Sample =658

Q: For each probability and percentile problem, draw the picture. The speed of cars passing through…

A: Let X be the speed of cars passing through the intersection of Blossom Hill Road and the Almaden…

Q: Solve the problem. Assume that mountain lions' weights are normally distributed with a mean of 62.6…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 62.6 ,…

Q: Suppose that an ice cream dispenser fills up an average of 200 mL per cup. If it is in normal…

A: The average number of ice cream dispenser fill up an average of 200 ml per cup. The standard…

Q: (fo-fe) Fill in the missing values in the table. Round your responses for the expected frequencies…

A: Does it seem to you that people tend to be absent more on some days of the week than on others First…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 200lbs and the…

A: Answer:- Given , The standard deviation, σ = 200lbs  The mean steer weight, μ = 1300lbs  Using…

Q: Does it seem to you that people tend to be absent more on some days of the week than on others?…

A: Weekday f0 fE χ2=f0-fE2fE Monday 29 28 0.036 Tuesday 18 28 3.571 Wednesday 34 28 1.286…

Q: Round off up to 4 decimal places. 61% of all violent felons in the prison system are repeat…

A: X : Number of repeat offenders out of 50 So, X ~ Binomial(50,0.61) a. We have to find the…

Q: A dice is rolled three times a. Find the probability of getting exactly 2 fours  b. Find the mean,…

A: Let X be a random variable from Binomial distribution with parameter n and p. Mean = np  Variance=…

Q: You play a game of chance that you can either win or lose (there are no other possibilities) until…

A: Probability of losing (p) the game is 0.61 Probability of winning the game = 1- p = 1- 0.61=0.39

Q: Adult men's heights are normally distributed with m = 70 inches and s= 2.6 inches. What is the…

A: Answer Given,The mean = 70The standard deviation = 2.6By using the standard normal distribution