Suppose that the age of a randomly selected business major can be considered to be a random variable with mean 20 years and standard deviation 2 years. A group of 64 business majors is selected at random and their average age x¯ is calculated. b) What is the probability that x¯< 19.7?

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A: We want to find the probability  P(x&lt;16.5) We have given that normally distributed length, with a…

Q: As reported by the US National Center for Health Statistics, the mean serum high-density-lipoprotein…

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Q: Suppose that a distribution of the number of workers per year that will absent from work per year is…

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Q: A manufacturer knows that their items have a normally distributed length, with a mean of 9.7 inches,…

A: Given that, A manufacturer knows that their items have a normally distributed length with, Mean =…

Q: The center for Disease Control and Prevention reported in 2012 that 1 in 88 people had been…

A: Given that  The center for disease control and prevention reported in 2012 that  1 in 88 people had…

Q: 4. Suppose that a particular candidate for public office is in fact favored by 48% of all registered…

A: Given data, p=48%=0.48 n=500 P(p&gt;0.5)=?

Q: Suppose that the average outstanding credit card balance for young professionals is php 11,200 with…

A: Given that the average outstanding credit card balance for young professionals is php 11,200 with…

Q: According to an almanac, 60% of adult smokers started smoking before turning 18 years old. (a)…

A: Given that, probability, p= 60% = 0.60 And sample size is n= 100 Hence X~ binomial (100,0.60)

Q: Suppose that a company ships packages that are variable in weight, with an average weight of 15 lb…

A: Given that a company ships packages that are variable in weight, with an average weight of 15 lb and…

Q: Suppose a pharmaceutical company wants to do a study of the commissions of its sales force. Let's…

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Q: A study showed that the average number of hours children in the US watch television each day is 4…

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Q: A grocery store produce manager is told by a wholesaler that the apples in a large shipment have a…

A: Let X denote weight of apples. X ~ N(7,1.8) The manager is going to randomly select 36 apples and is…

Q: Suppose that the time it takes a student to complete an exam is a random variable that has normal…

A: Given, normal distribution with a mean of 75 minutes and standard deviation of 10 minutes To find:…

Q: Suppose that the average outstanding credit card balance for young professionals is Php11,200 with…

A: Given : Mean = μ = 11200 Standard deviation = σ = 2600 Sample size = n = 150

Q: Suppose, 12 air conditioners are returned to their distributors and among them, 7 air conditioners…

A: Given that  Number of air conditioner (n)=12  Number of defective (X)=7 Then we have to find  a) If…

Q: Suppose that the chance variable X shows normal distribution with mean μ = 20 and variance σ2 = 16.…

A:

Q: Suppose that a random variable (e.g., market value for a piece of equipment) is normally…

A: The given data: Mean, μ=175  Variance, σ2=25 Standard deviation, σ is given as: σ=25=5   The…

Q: A grocery store produce manager is told by a wholesaler that the apples in a large shipment have a…

A: Given that the mean weight of 7 ounces and standard deviation of 1.8 ounces.  That is, μ=7 and σ =…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 12.1…

A:

Q: According to an almanac, 70% of adult smokers started smoking before turning 18 years old. (a)…

A:

Q: The weights of the fish in a certain lake are normally distributed with a mean of 11 lbs. and a…

A: From the provided information, Mean (µ) = 11 Standard deviation (σ) = 12 X~N (11, 12) Here X be a…

Q: what is the probability that when taking a sample without replacement of size 28, 12 students are…

A: HERE GIVEN, 47 students are taking the test from room cs103 located in the health science building.…

Q: Suppose that the birth weight of children follows a normal distribution with a mean of 3.0 kg and…

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Q: Suppose it is known that in a certain large human population cranial length is approximately…

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Q: A survey indicates that 20% of the people who earn less than $42000 per year are homeowners. If a…

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Q: Suppose the taxi and takeoff time for commercial jets is a random variable X with a mean of 8.5…

A: We have to find out given probabiity..

Q: at their items have a normally distributed length, with a mean of 16.8 inches, and standard…

A: According to the sum, A manufacturer knows that its items have a normally distributed length, with a…

Q: he number of times a customer uses an atm has an unknown distribution with mean = 7 and variance =…

A: The probability of observing a sample mean between 6.4 and 6.8 = 0.2184

Q: It is estimated that 55% of the freshmen entering a particular college will graduate from that…

A: Let us assume X=the number of graduates in 4 yearsn=sample size=5p=probability of success= 55%=0.55X…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 5.8 inches,…

A: It is given that the mean is 5.8 and standard deviation is 1.3.

Q: The duration of a capital murder trial has a mean of 21 days and standard deviation of seven (7)…

A:

Q: 4. A farmer has a flock of turkeys with weights that are normally distributed with a mean of 15.3…

A: Let X denote the weight of flock of turkeys. Given that X follows N(mean = 15.3, SD = 2.3), then Z =…

Q: a certain machine manufactures electrical resistors that have a mean resistance of 40 ohms and a…

A: According to the given information in this question We need to find the probability that the…

Q: Suppose that the completion time of a project as a proportion of the maximum allotted time is a beta…

A:

Q: Suppose that a random variable X can take the values (0, 1, 2 ,3,4,5,8,9} all with equal…

A: Given: Probability distribution of X x p(x) 0 0.125 1 0.125 2 0.125 3 0.125 4 0.125…

Q: uppose that the talk time on a fully charged iPhone is approximately normally distributed with mean…

A:

Q: 2. The average production of all the machines in a fabrication is 18 finished materials in one with…

A: It is given that the mean is 18 and standard deviation is 6.

Q: The Boeing 727 airliner carries 200 passenger and has doors with a height of 72 inches. Height of…

A: Given,mean(μ)=69.5standard deviation(σ)=2.4

Q: Suppose that 30% of all students who have to buy a text for a particular course want a new copy (the…

A: Given Information : Suppose that 30% of all students who have to buy a text for a particular…

Q: Suppose that it is known that 10 percent of a certain population is color blind. If a random sample…

A:

Q: Suppose the travel time from White Plains Transit Center to SUNY WCC on public transit (Bus Route…

A: It is given that X~U(10,25).

Q: Suppose that the age of a randomly selected business major can be considered to be a random variable…

A: We have given that  The age of a randomly selected business major can be considered to be a random…

Q: manufacturer knows that their items have a normally distributed length, with a mean of 12.7 inches,…

A:

Q: Suppose the weight of turkeys in a store are normally distributed with mean 15.5 lb and standard…

A: P(X&lt;16)=Pz&lt;16-15.52=P(z&lt;0.25)=0.5987

Q: A grocery store produce manager is told by a wholesaler that the apples in a large shipment have a…

A: From the provided information, Mean (µ) = 8 Standard deviation (σ) = 1.6 X~N (8, 1.6) Sample size…

Q: A company manufactures two types of cables, brand R and brand Q. Brand R has mean breaking strength…

A: A company manufactures two types of cables, brand R and brand Q. Let X be the breaking strength of…

Q: 3. A study conducted at a large hospital found that 27.8 percent of all patients admitted to the…

A: Binomial distribution:The binomial distribution gives the probability of number of successes out of…

Q: 1. The average product of all the machines in a fabrication is 12 finished materials in one hour…

A: Given  mean=μ=12, standard deviation=2, n=4,  P(X&gt;15)=?

Q: It has been reported that 32% of all employees in Canada are unionized. Assuming a random sample of…

A:

Q: Assuming that the weights of people are normally distributed with mean of 70 kg and standand…

A: Given : Assuming that the weights of people are normally distributed with mean of 70 kg and standand…

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.