An executive drives from her home to her office in the city. The driving times are normally distributed with a mean of 35 minutes and a standard deviation of 8 minutes. a). What is probability it will take her 30 minutes or less to drive to work? b.) What is the probability that it will take her 40 minutes or more to drive to work? c.) How long will the longest 10 percent of the trips take!"?

Q: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: d. For the 18 people, find the probability that the average coffee consumption is between 15.5 and…

A: d. Let x¯ denotes the average coffee consumption. The average coffee consumption for 18 people is,…

Q: SAT exam scores are normally distributed with mean 500 and standard deviation 100.  Give the…

A: Let X= SAT exam score  Given that X follows normal distribution with mean=500 and standard deviation…

Q: 1. During flu season, there is a 7% chance of catching the flu. In a sample of 30 individuals, find:…

A: Proportion of chance that catching flu(p)=007sample size(n)=30

Q: Exercise 1: The weight of a random scone sold by your favorite bakery has a mean of 105g I a…

A: Given: μ = 105 σ = 5 Formula Used: Z-score= X-μσn

Q: hotel in a European city follows a normal distribution with a mean of 170 euros and a standard…

A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 79…

A: (a)   Determine the distribution of X.   The distribution of X is determined below as follows:

Q: 3. Assume can of Coke are filled so that the actual amounts have a mean of 12.00 oz and a standard…

A: Let X denotes the amount of Coke Assume that X follows normal distribution having mean 12 and…

Q: An electrical firm manufactures light bulbs that have a life, before burn-out, that is normally…

A:

Q: (c) Describe the sampling distribution of p, the proportion of people who are satisfied with the way…

A: From the given data fill the blanks given

Q: The weight of football players is normally distributed with a mean of 220 pounds and a standard…

A: Given X is normal Distributed with mean µ = 220.0 and standard deviation σ = 25.0 now will using…

Q: Find the indicated probability. 23. The average number of pounds of red meat a person consumes each…

A:

Q: hts per a 12,370. Let X = number o places where possible.

A: Here it is given that X denotes the no of ants in a randomly selected acre of a forest. Mean (μ) =…

Q: 2. Assume that, among residents of a large (over 6,000) Florida subdivision, the population mean age…

A: From the given information, The mean age is 65 and standard deviation is 2 years.

Q: The length of a fully grown hibiscus plants is normally distributed and has a mean of 35cm and a…

A: Given that,Mean(μ)=35standard deviation(σ)=4     The random variable  is length of fully grown…

Q: b. The length, in meter, of the student in Business Mathematics and Statistics class can be modelled…

A:

Q: A waitress believes the distribution of her tips has a model that is slightly skewed to the left​,…

A: Given Information: The distribution of tips has a model that is slightly skewed to the left​, with a…

Q: 80% of beans seeds sprout. Three seeds were planted. Find the distribution of the variable X number…

A: Given : n = 3 P = 0.80 q = 1 - p     = 1 - 0.80 = 0.20

Q: An automatic machine in a manufacturing process is operating properly if the lengths of an important…

A:

Q: 22. Each American uses 650 pounds of paper a year. Suppose that the distribution is normal with a…

A: It is given that each one uses 650 pounds of paper a year.The distribution is normal with a…

Q: A highway engineer who is studying the number of accidents at a busy intersec- tion has determined…

A: The number of accidents occurring at a busy intersection follows a Poisson distribution. This is…

Q: D. What is the mean of the probability distribution E. What is the standard deviation of the…

A: We have to find d...Mean of the probability distribution e... Standard Deviation of distribution

Q: *@ 100% Trees 3) The following histogram gives the heights of all trees at a nursery. a) How many…

A: (a)

Q: 27. The mean undergraduate cost for tuition, fees, room and board for a four-year institution was…

A: 27.The mean is $26489 and the standard deviation is $3204.

Q: iven the number of trials and the probability of success, find the mean, standard deviation, and the…

A: We know that  n= number of trials  p= success of probability  q=1 - p X~binomial ( n,p)

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: The mean is 120 minutes and the standard deviation is 20 minutes.

Q: A line waiting for tickets to an event has a normal distribution and the mean time is 23 minutes.…

A: Population mean, μ=23 Population sd, σ=4

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: The mean of childhood asthma prevalence in 43 cities is 2.32%. A random sample of 32 of these cities…

A: Given : mean = μ = 2.32% S.D = σ =1.30% Sample size = n = 32 PX¯>2.8 =1-PX¯≤2.8 PX¯ >2.8…

Q: 50 part-time students were asked how many courses they were taking this term. The (incomplete)…

A: Hi, we are supposed to answer three subparts at a time. Therefore, I am answering the first three…

Q: A highway engineer who is studying the number of accidents at a busy intersec- tion has determined…

A: The number of accidents occurring at a busy intersection follows a Poisson distribution. This is…

Q: A recent study found that 27% of adults often purchase used items istead of new ones. Assume a…

A: Given information Probability that the adults often purchase used items instead of old ones = 0.27…

Q: A class has 12 students registered. On any class time 45% of the students are absent. a. Find the…

A: It is given that the number of students registered in class is 12 and 45% of the students are absent…

Q: The average price of a Google Chrome book is P21,100. Assuming that the prices approximately normal,…

A:

Q: Suppose that the commuting time on a particular train is uniformly distributed between 41 and 61…

A: Here the given information is ,Suppose that the commuting time on a particular train is uniformly…

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.