The mean and standard deviation of a population are 200 and 20, respectively. What is the probability of selecting one data value less than 190? А. 42% В. 58% C. O С. 31%

Q: Given a normal distribution with a mean of 150 and a standard deviation of 10, what is the…

A: Given,   Mean = 150 Standard deviation = 10

Q: The weight of a small Starbucks coffer is normally distributed random variable with a mean of 340…

A:

Q: The average credit card debt for college seniors is $3000. If the debt is normally distibuted with a…

A: A) The senior owes at least $1200

Q: Assuming that the scores of the student in a test are normally distributed with the mean of 40 and…

A: Given data mean =40 ,standard deviation =6

Q: For exercises 4 & 5, assume that 28% of randomly selected adults have high cholesterol (with a…

A: From the given information, Sample size (n) = 5 Probability of success (p) = 0.28 Consider, x be a…

Q: 8. The reading speed of sixth-grade students is approximately normal, with a mean speed of 135 words…

A:

Q: If the mean of a Binomial distribution is 5, which is the most likely value for its standard…

A: Answer :- Mean of binomial Distribution  = np = 5 Standard Deviation of binomial Distribution =

Q: The Economic Policy Institute periodically issues reports on wages of entry level workers. The…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks   a) What is the…

Q: 14. The golf scores for a school team were normally distributed with a mean of 68 and a standard…

A:

Q: The starting salaries of individuals with an MBA degree are normally distributed with a mean of…

A: The normal distribution is the most useful theoretical distribution for continuous variables.…

Q: The Economic Policy Institute periodically issues reports on wages of entry level workers. The…

A: From the given data: Standard deviation for male = $2.30 Standard deviation for female = $2.05

Q: The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 405…

A: As per the guidelines we are allowed to solve maximum of 3 subparts If you need help with other…

Q: a. How many standard deviations away from the mean is a beetle with mandible length of .44 mm? b.…

A: A z-score is known as the standard score that determines how much the data point deviates from the…

Q: e a sample of 25 hamburgers and weigh them, we find that the mean is 0.57 pounds and the standard…

A: Given that  (a) sample size (n) =25     Sample mean (x¯) = 0.57 pounds     Standard deviation (s)…

Q: The grades of a statistics midterm are normally distributed with a mean of 70 and a standard…

A:

Q: The weight of football players is normally distributed with a mean of 180 pounds and a standard…

A:

Q: Rochester, New York averages μ = 21.9 inches of snow for the month of December. The distribution of…

A: Consider X be a random variable which, follows normal distribution, indicates the pay off by the…

Q: A study shows that the normal time that a customer occupied a table in a fine dine restaurant is 1.2…

A: Solution-: Given: μ=1.2,σ=0.4,n=25 We find, (a)  What is the value of the mean of the sample means?…

Q: The scores of a freshman chemistry class in college have a mean of 70 and a standard deviation of 12…

A: C is the correct option. The scores of a freshman chemistry class in college have a mean of 70 and a…

Q: At a customer service call center for a large company, the number of calls received per hour is…

A:

Q: Suppose that in College Entrance Test, the cutoff score for passing is 85. If the mean of the test…

A:

Q: A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet…

A: Given,mean(μ)=8.4standard deviation(σ)=1.8sample size(n)=40

Q: The lifespan of a laptop battery is normally distributed. If the mean lifespan of a battery is 4…

A: Let , X be the lifespan of a laptop battery. X follows Normal distribution with , Mean = μ = 4 years…

Q: The commuting time for a student to travel from home to a university campus is Normally distributed…

A: Let X be the commuting time for a student to travel from home to a university campus is Normally…

Q: What is the value of k?   What is the standard deviation?

A: Here use basic of discrete probability distribution

Q: has averaged 7.48 mg/L with a standard deviation of 1.6 mg/L. If 10 students measure the sulfate in…

A: Given: sample size, n = 10Mean, μ =7.48std. deviation, σ = 1.6

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 44…

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Q: The Economic Policy Institute periodically issues reports on worker’s wages. The institute reported…

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

Q: Regardless of the kind of workout a gym goer does, the mean time spent on the treadmill is 45…

A: According to the given information, we have Mean = 45 Standard deviation = 15 Sample size, n = 36

Q: The heights of strawberry plants are Normally distributed with a mean of 12 inches and a standard…

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: If the students make one more measurement using the same equipment and procedures, what is the…

A:

Q: Newborn elephant calves usually weigh between 200 and 250 pounds-until October 2006, that is. If,…

A: Given  μ=225, σ=45,  P(280<X<350)= ?  Note: This probability value calculate from standard…

Q: If the grades on a statistics test are normally distributed with a mean of 80 and a standard…

A: The probability is equal to the area under the curve of normal distribution. So the probability that…

Q: The final score for a mathematics exam is normally distributed, with an average score (µ) of 57 and…

A: GivenMean(μ)=57standard deviation(σ)=9.25

Q: The volume of cracker boxes are normally distributed, with a mean of 7 oz and a standard deviation…

A: It is given that:

Q: A study found that the heights of college males follow a normal distribution with a mean of 70…

A: Given information- Mean height, μ = 70 inches Standard deviation, σ = 2.5 inches We have to find the…

Q: Suppose you sample one value from a uniform distribution with a = 0 and b = 20. a) What is the…

A: Let the random variable X follows uniform distribution on interval [a = 0, b= 20]   The PDF of…

Q: The average price of a Google Chromebook is 21,100 php. Assuming that the prices are approximately…

A:

Q: 4) Which of these samples would have the smallest standard deviation? a. 101, 92, 84, 131 b. -25,…

A:

Q: A population has a mean of 180 and a standard deviation of 24. A sample of 64 observations will be…

A: Given Data: Let X represent the random variable Mean=180 SD=24 n=64

Q: If a gambler places a bet on the number 7 in​ roulette, he or she has a​ 1/38 probability of…

A:

Q: A set of final examination grades in an introductory statistics course is normally​ distributed,…

A:

Q: On average, Upstate Chevrolet sells 20 cars each week, with a standard deviation of 2. How many…

A: As per guidelines we are allowed to maximum of three sub parts.22) If you need help with other sub…

Q: A set of scores in Statistics examination is approximately normally distributed with a mean of 74…

A: Given: The value of mean is, μ=74. The value of standard deviation is, σ=7.9. The objective is to…

Q: The mean and standard deviation of a population are 200 and 20, respectively. What is the…

A:

Q: a. What is the probability that a sample of 50 mill graduates will provide a sample mean within one…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at…

Q: The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A…

A: It is given that the mean is 56.8 and standard deviation is 12.3.

Q: c. What is the probability that exactly ten of the 45 luxury cars sold are silver? d. What is the…

A: It is given that n=45 and p=0.191.

Q: The weights of adult male rhesus monkeys are normally distributed with a mean of 15 pounds and a…

A: Note :-As per our policy, we can answer only three sub-parts, make a new request for other sub-parts…

Q: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is…

A: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is…