The average waiting time for the 36 customers is 3.2 minutes. What is the probability that the average of 36 customers is 3.2 minutes or more? Do you think that assistant manager's claim that the mean is 2 minutes is correct?

Q: Suppose you have a population of adult male basketball players and you know their mean height is 190…

A: given data normal distributionμ = 190 cmσ = 7.2 cm

Q: At a large department store, the average number of years of service was 13.5 years with a standard…

A: The objective of this question is to find the probability that a randomly selected employee has…

Q: The average price for a gallon of gasoline in the United States is $3.76 and in Russia it is $3.39.…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: According to a study done by Pierce students, the height for Hawaiian adult males is normally…

A:

Q: About 74​% of all female heart transplant patients will survive for at least 3 years. Eighty female…

A: Given,sample size (n)=80sample proportion(p^)=0.74mean(μ)=p^=0.74standard…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 15.9…

A:

Q: A sample of 235 students was taken for an exploratory study. Each member of a random 35 of these…

A: Since the sample size is sufficiently large, and the population standard deviation is known, the…

Q: Assume that newborn girls have birth weights with a mean of 3022 grams and a standard deviation of…

A: μ=3022σ=716n=100

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an…

A: It is given that the mean is 34.7 and the standard deviation is 7.5.

Q: Yoonie is a personnel manager in a large corporation. Each month she must review 10 of the…

A: Given Data: μ=4σ=0.9n=10

Q: The average age of all employees is 25 years, and the standard deviation of the ages of all…

A: Given,sample size(n)=100mean(μ)=25standard deviation(σ)=3

Q: A veterinary researcher takes an SRS of 60 horses presenting with colic whose average age is 12…

A: Option b is the correct answer.

Q: A small jet can carry up to 43 passengers and 3 crew members. There is a weight restriction of 9200…

A:

Q: Ava's morning routine is normally distributed and independent. She has been tracking her time from…

A: Let X and Y are the first and second mornings. It is given that X and Y are independent and…

Q: Household incomes in the city of Tampa Bay  are right-skewed with an average of 50,270 and standard…

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

Q: inutes on average to complete a specific task. Given that the utes and the times for completing this…

A: Given

Q: About 70​% of all female heart transplant patients will survive for at least 3 years. Sixty female…

A: Given n=60 Population proportion=0.70 p=0.66

Q: About 73​% of all female heart transplant patients will survive for at least 3 years. Ninety female…

A:

Q: A company manufactures Samsung electronics. The mean resistance for these electronics is 1000 ohms…

A: We have yo find the probability that the mean resistance of these 50 electronics will be 1005 ohms…

Q: A company produces light bulbs whose life follows a normal distribution, with mean (1355) hours and…

A:

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: Yoonie is a personnel manager in a large corporation. Each month she must review 10 of the…

A: a) Define a random variable X, that is the time to review.

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

A: a)   The probability that the weight is between 150 lb and 211 lb is 0.5598 and it is calculated…

Q: A potato chip manufacturer produces bags of potato chips that are supposed to have a net weight of…

A: here we have to use chi-square test statics from given data we have : n=28 s=5.3 σ=4

Q: Suppose that an airline has a requirement that male members of the cabin crew are between 62 inches…

A: Approach to solving the question: 1) First find the z-score for both the given inches.2) Find the…

Q: A particular fruit's weights are normally distributed, with a mean of 452 grams and a standard…

A: Given: μ = 452 σ = 24 Thus, X ~ N(μ = 452, σ = 24) The probability that a randomly selected fruit…

Q: The Australian Emergency department reports that the average time it takes to respond to an…

A:

Q: A government sample survey plans to measure the total cholesterol level of an SRS of men aged 20-34.…

A: Note: As it is not logical that “the probability that x falls within + or -2 milligrams per…

Q: The finish times for marathon runners during a race are normally distributed with a mean of 195…

A: given data  normal distributionμ = 195 minutesσ = 25 minutesP(x<180 minutes) = ?