Question. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. a. W hat is the probability of completing the exam in one hour or less? b. W hat is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? c. Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time?

Q: For a certain distribution, the measurement 12.1 is 1.5 standard deviations below the mean, and the…

A: It is given that  μ - 1.5*σ = 12.1    . . . (1) μ + 3*σ = 17.5    . . . (2)   Note: According to…

Q: Regarding the speeds at which cars pass through a checkpoint. Assume the speeds are normally…

A:

Q: According to Money magazine, Maryland had the highest median annual household income of any state in…

A:

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: The lengths of lumber a machine cuts are normally distributed with a mean of 100 inches and a…

A: GivenMean(μ)=100standard deviation(σ)=0.5

Q: a. What is the probability that a randomly-chosen person attending this convention owns between 67…

A: Here mean = 73  And standard deviation  = 7 Here use normal distribution table for finding…

Q: Regarding the speeds at which cars pass through a checkpoint. Assume the speeds are normally…

A: Given Information: Assume the speeds at which cars pass through a checkpoint are normally…

Q: A food processing plant fills snack-sized bags of crackers. The mean number of crackers in each bag…

A: We have given that  Mean = 22 Standard deviation = 2 Sample size = 24

Q: Suppose that the heights of men in the United States are normally distributed with a mean of 65.6…

A: The mean is 65.6 and the standard deviation is 2.7.

Q: Most colleges here in the Philippines requires applicants for admission to take the College…

A: Consider X : scores on CAT X~Nμ=527,σ=112

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

A:

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A:

Q: any produces steel rods. The lengths of the steel rods are normally distributed with a mean of m and…

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

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A:

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: 2. The average American walks 4,500 steps per day with a standard deviation of 900 steps. If this…

A: GIVEN DATA normal distributionμ = 4500σ = 900

Q: d. Find the probability that fewer than 80 patients will have the average wait time. Page 3 / 3

A: (a)   Obtain the value of mean.   The value of mean is obtained below as follows:   Let X denotes…

Q: The weight of luggage carried onto a plane by passengers is normally distributed with a mean of 30…

A: Let X be the The weight of luggage carried onto a plane by passengers Mean=30, standard deviations…

Q: n a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: Trucks in a delivery fleet travel a mean of 130 miles per day with a standard deviation of 39 miles…

A: The data on per day mileage of a delivery truck is normally distributed. Population mean, Population…

Q: . If there were a total of 500 respondents, how many of them are expected to be more than 72 inches…

A: Given that mean=65.4,s.d=2.9

Q: III. The height of the PBA players mean of 193 cm with standard deviation of 7. If 30 of them are…

A: Given,sample size(n)=30mean(μ)=193standard deviation(σ)=7

Q: The amount of annual snowfall in a certain mountain range is normally distributed with a mean of 70…

A: let x be the amount of annual snowfall in certain mountain range follow normal distribution with…

Q: The standard deviation is also called the give-or-take value. True

A: we have to state that the given statement is true or false.  statement : The standard deviation is…

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: #hn. Don't provide handwriting solution

A: calculation For part a): We are given the mean and standard deviation per party, and we know that…

Q: soft drink machine outputs a mean of 29 ounces per cup. The machine's output is normally distributed…

A: Suppose the random variable x defines the soft drink machine output.

Q: Hila City typically has rain on about 16% of days in February. a. What is the probability that it…

A: Given,p=0.16q=1-0.16=0.84no.of days in the month of February(n)=28Let X= no.of days will rain in the…

Q: Scores on a test are normally distributed with a mean of 78 and a standard deviation of 6. A student…

A: Given: Mean μ=78 Standard deviation σ=6 A student is selected at random.

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: The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000…

A: given  μ=16541σ =2097

Q: The waiting time a customer spends in the airport luggage check-in is a random variable with mean…

A:

Q: The annual per capita consumption of bottled water was 33.7 gallons. Assume that the per capita…

A:

Q: An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An…

A: The standard deviation is 1,350.

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 sick-leave time of employees in a firm in a month is normally with a f 100 hours and a standard…

A: Given  Mean (mu) = 100 hours Standard deviation = s= 20 hours

Q: The average time Filipinos spent in streaming site is 15 hours per week. Suppose a sample of 65…

A: a) Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

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.