Statistics released by a reputable traffic safety organization show that on an average weekend night, 1 out of every 10 drivers on the road is drunk. If 450 drivers are randomly checked next Saturday night, what is the probability that the number of drunk drivers will be (a) less than 28? (b) more than 61? (c) at least 47 but less than 59? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table, (a) The probability is (Round to four decimal places as needed.)

Q: According to a survey in a country, 24% of adults do not own a credit card. Suppose a simple random…

A: Round the value to the nearest integer.

Q: Is the difference between the mean annual salaries of statisticians in Region 1 and Region 2 more…

A: Solution: Given information: n1=48  Sample size of region 1n2= 44 Sample size of region 2x1=$67700…

Q: Suppose in a sample one number from a standard normal distribution, what is the probability it will…

A:

Q: Using the Standard Normal Distribution Table, what is the likelihood that a score will fall below a…

A: Given: Z~N(0,1)

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: We have given that.   X~N( μ , ?^2 )   μ =139 , ? =26.7  ,n=37   Z-score =( x - μ )/?

Q: Using the standard Normal Distribution table, what is the probability of scoring above a z-score of…

A: Given Probability of scoring a z score of +0.61

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: By using the given information, we have Mean = 125 Standard deviation = 26.8

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A: From the provided information, 76% of people believe “tranquilizers work very well to make a person…

Q: Ask Your Teacher   Suppose the heights of 18-year-old men are approximately normally…

A: Solution: a. Let X be the heights of 18-year-old men. From the given information, X follows normal…

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A:

Q: Jacob helped his younger sister create a gameboard spinner. The spinner has a 53% chance of landing…

A:

Q: The most famous geyser in the world, Old Faithful in Yellowstone National Park, has a mean time…

A: Given that  X~Normal(μ=85,?=21.25) μ=85 , ?=21.25

Q: A jar contains 80 chocolate chip cookies and 35 oatmeal cookies. Assume sampling is done with…

A: Given information: A jar contains 80 chocolate chip cookies and 35 oatmeal cookies. Assume sampling…

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A: Given that,p=74% =0.741-p=1- 0.74 = 0.26n = 85

Q: A common practice of airline companies is to sell more tickets for a particular flight than there…

A: Given, The total number of tickets sold, n = 200 The total number of seats = 194 Lets consider it as…

Q: Statistics released by a reputable traffic safety organization show that on an average weekend…

A: The following information has been given: The probability of success is: p=110  =0.1 q=1-p  =1-0.1…

Q: A humane society reports that 19% of all pet dogs were adopted froom ananimal shelter. Assuming the…

A: From the provided information, A humane society reports that 19% of all per dogs were adopted from…

Q: What is the probabilities associated with the normal distribution of a P(z >= .23) =

A: Z score is given z = 0.23  Using Excel formula =NOMSDIST(0.23) or Z table we find the probabilities…

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: (a)   Obtain the probability that his weight is between 140 lb and 191 lb.   The probability that…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Determine the distribution of the random variable X follows. The distribution of the random variable…

Q: Aaliyah is 74 years old. Based on a normal distribution with mean 47.8 and standard deviation 12.6,…

A: GivenAaliyah is 74 years oldx=74Mean(μ)=47.8standard deviation(σ)=12.6

Q: Find the probability that an observation taken from a standard normal population will be more than…

A: We have to find given probability..

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. Based on that, the mean…

A: We have given that the mean 173000, standard deviation 32000 and sample size 13.   Note: According…

Q: Why is it that the normal distribution is the most useful probability distribution?

A: Solution-: We want to get the reason why is it that the normal distribution is the most useful…

Q: A pair of dice is rolled 150 times. What is the probability that a total of 7 occurs (a) at least 20…

A:

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A:

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: Given Information: Mean μ=127 Standard deviation σ=33.9

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: We have to find the following probabilities.

Q: 4. The average salary for first-year teachers is $27,989. Assume the distribution is approximately…

A: Given,mean(μ)=$27,989standard deviation(σ)=$3250

Q: According to a survey in a country, 29% of adults do not own a credit card. Suppose a simple random…

A:

Q: The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio, varies according…

A: Given data,μ=21σ=10P(15<X<25)=?

Q: A pair of dice is rolled 210 times. What is the probability that a total of 7 occurs (a) at least 24…

A: It is given that, a pair of dice is rolled 210 times.  If we flip a pair of coin then, we get…

Q: According to a study, the proportion of people who are satisfied with the way things are going in…

A: Given that n =100,p=0.80

Q: Given a standardized normal distribution (with μ = 100 and a σ = 10), what is the probability that…

A: Solution-: Given: μ=100,σ=10 We want to find the probability that between what two X values…

Q: Given the standardized normal distribution, What is the probability that Z is between 1.57 and…

A:

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A: The sample size n is 85 and p=0.75.

Q: Researchers at a reputable university and a reputable health organization claim that approximately…

A:

Q: The height of American women is believed to follow a normal distribution with mean μ = 5.38 feet and…

A: If a sampling distribution of sample mean is generated for normally distributed population, then the…

Q: Sketch the normal distribution with μ=4 and σ=1.

A: Given : μ=4 σ=1

Q: What is the probability that observations in a standard normal distribution will be: ?(−1.21 < ? <…

A: Given:  Z follows standard normal distribution with mean 0 and variance 1 . z1 = -1.21  z2 = 0.57 We…

Q: The high temperature xx (in degrees Fahrenheit) on January days in Columbus, Ohio, varies according…

A:

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A: # Given: population mean mu=129 lb  standard deviations=27.1 lb  of weight of pilot which follow…

Q: A state insurance commission estimates that 13% of all motorists in its state are uninsured. Suppose…

A:

Q: A common practice of airline companies is to sell more tickets for a particular flight than there…

A: We have to find out given probability..

Q: A pair of dice is rolled 210 times. What is the probability that a total of 7 occurs (a) at least 24…

A: Here, the sample space of the sum of two dices is Then, the probability of getting sum of 7…

Q: esearchers at a reputable university and a reputable health organization claim that approximately…

A: Given Information: Proportion p=0.74 Number of trials n=80

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A:

Q: Acommon practice of airline companies is to sell more tickets for a particular flight than there are…

A: Given: n=150probability of no shows=0.04Probability of showing up=1-0.04=0.96 The flight is…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Hello. Since your question has multiple parts, we will solve the first 3sub parts of question for…

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.