Americans receive an average of 16 Christmas cards each year. Suppose the number of Christmas cards is normally distributed with a standard deviation of 6. Let X be the number of Christmas cards received by a randomly selected American. Round all answers to 4 decimal places where possible. b. If an American is randomly chosen, find the probability that this American will receive no more than 18 Christmas cards this year. _______ c. If an American is randomly chosen, find the probability that this American will receive between 19 and 25 Christmas cards this year. _______ d. 70% of all Americans receive at most how many Christmas cards? (Please enter a whole number) ________

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

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of µ-105 and a standard…

A: Given that  The adults have IQ scores normally distributed with  Mean (μ) = 105 Standard deviation…

Q: Use the following information According to a recent survey, high school students average 100 text…

A: As per our guidelines we are suppose to answer only one question. Given,mean(μ)=100standard…

Q: Los Angeles workers have an average commute of 34 minutes. Suppose the LA commute time is normally…

A: a) Mean= 34 Standard deviation = 15  So, variance= 152= 225 X~N(mean, variance)=N(34,225)…

Q: b. Find the probability that this American man consumes between 9.3 and 11.2 grams of sodium per…

A: Mean()=9.6standard deviation()=0.8

Q: a quiz for a psychology class consists of ten questions. the questions are multiple choices with…

A: There are 5 multiple options.  So probability of selecting correct option is 1/5.  p= 1/5  There are…

Q: Assume the readings on thermometers are normally distributed with a mean of 0degrees°C and a…

A: We have to find probability..

Q: The probability that a randomly selected adult has an IQ less than 129 is (Type an integer or…

A: Assume that adults have IQ scores that are normally distributed with a mean of μ= 105 and a standard…

Q: The number of ants per acre in the forest is normally distributed with mean 42,000 and standard…

A:

Q: a. What is the probability that a randomly selected try- out participant will not satisfy the height…

A: Let , X→N(μ=170 , σ=7) Our aim is to find the following : a) The probability that a randomly…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and…

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: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 78…

A: Note: According to our guidelines we can answer only three subparts and rest can be repost.

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A: Let "X" be the IQ score of the adults.

Q: Suppose that, on average, electricians earn approximately u $54,000 per year in the United States.…

A: GivenMean(μ)=54000standard deviation(σ)=12000sample size(n)=4

Q: The amount of coffee that people drink per day is normally distributed with a mean of 14 ounces and…

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

Q: Los Angeles workers have an average commute of 33 minutes. Suppose the LA commute time is normally…

A: Let, x denotes the commute time for randomly selected LA worker. It is given that- x~N33,13

Q: hts per a 12,370. Let X = number o places where possible.

A: Here it is given that X denotes the no of ants in a randomly selected acre of a forest. Mean (μ) =…

Q: 1C. What amount of time would place a student using the elliptical at the UCF gym in the bottom…

A: It is given that  Mean, μ = 18.9 Standard deviation, σ = 2.15

Q: Today, the waves are crashing onto the beach every 5.4 seconds. The times from when a person arrives…

A: Solution: Let X be the times from when a person arrives at the shoreline until a crashing wave. From…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 200lbs. and the…

A: Let "X" be the weight of steers in a herd.

Q: 3. A customer booking a grab ride spends an average of 45 minutes finding a driver during rush…

A: The question is about normal dist.Given :Popl. mean time (  ) = 45 minPopl. std. deviation of time (…

Q: 8 The population of a country follows a normal distribution with mean height 175 cm and standard…

A: Given Population mean μ=175, standard deviations σ=6  Let X be the height  X~N(μ=175, σ=6) Note:…

Q: The Brac University Debate Team is looking for new members to join the team. The IQ of all the…

A: Given : Mean , μ = 94 points Standard deviation, σ=18 points Limits for joining the team : 71 points…

Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

A:

Q: A grocery​ store's receipts show that Sunday customer purchases have a skewed distribution with a…

A: From the provided information, Mean (µ) =29 Standard deviation (σ) = 21 Sample size (n) = 307 For…

Q: The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 66…

A: Given : X~Nμ=66,σ=17

Q: A decibel is a measure of intensity of sound. The average number of decibel at a concert is 130.…

A:

Q: 8 The population of a country follows a normal distribution with mean height 175 cm and standard…

A: Mean(µ) = 175Standard deviations (σ) = 6X ~ N (µ, σ )= N(175, 5)

Q: A. Suppose four coins are tossed. Let X be the random variable representing the number of tails that…

A: Note: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question…

Q: The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in…

A: The provided information is as follows:The total number of samples is .The data is given as…

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food…

A: The total number of observed order that are given in the table are Total orders =…

Q: A computer selects a number X from 4 to 12 randomly and uniformly. Round all answers to 4 decimal…

A: a. The distribution of X is, X~U(a, b) X~U(4, 12) b. The distribution of x-bar for the randomly…

Q: The average THC content of marijuana sold on the street is 10.8%. Suppose the THC content is…

A: Given, mean= 10.8  Standard deviation= 1 So, variance= 12=1 So, X~N(mean,variance)= N(10.8,1)…

Q: Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles…

A:

Q: Assume that women's weights are normally distributed with a mean given by mean=143 lb and a standard…

A:

Q: c. What is the probability that one randomly selected person drinks between 16.5 and 17.4 ounces of…

A: c. The random variable X is defined as the amount of coffee that people drink per day which follows…

Q: How do I do this problem?

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

Q: ease answer all these question

A: (a) Given: μ=18, σ=4.5 The corresponding z-value needed to be computed is: The probability that a…

Q: d. The probability that the wave will crash onto the beach between 0.2 and 3.3 seconds after the…

A:

Q: On average, indoor cats live to 12 years old with a standard deviation of 2.4 years. Suppose that…

A:

Q: Assume that you want to find the probability that when five consumers are randomly selected, exactly…

A:

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

A: given data normal distributionμ = 29 ouncesσ = 4 ouncesx = weight of cupP(25<x<31) = ?

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.