13. The variable X measures the time it takes for a delivery truck to complete a route. The mean time for completion is 100 minutes with a standard deviation of 18 minutes. Find the probability that the route will require less than 110 minutes and the probability of the route that will take at least 110 minutes. And What is the probability that the route will require between 100 to 110 minutes?

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 weights of steers in a herd are distributed normally. The standard deviation is 300lbs and the…

A: Solution: Let X be the weights of steers in a herd. From the given information, X follows normal…

Q: Q4. Suppose a poll of 15 voters is taken in a large city. The purpose is to determine x, the number…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: .. Lori just bought a set of 4 tires for her car. The life of a tire is normally distributed with a…

A:

Q: 2. Suppose that the mean lifetime of a random sample of 25 batteries produced by a factory is 700…

A: Solution: 2. Let X be the lifetime of a battery. From the given information, X follows normal…

Q: A student takes a multiple choice exam with 10 questions, each with four possible selections for the…

A: Given that, A student takes a multiple choice exam with 10 questions, each with four possible…

Q: The probability that it snows in a particular city on any given winter day is 13%. What is the…

A: Given that the probability that it snows in a particular city on any given winter day is 13%. Let,…

Q: Find the probability that a sample of 18 has a sample mean below 32. The population mean is 24 and…

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

Q: Exhibit 6-5 The weight of items produced by a machine is normally distributed with a mean of 8…

A: Given that  Mean = 8 Standard deviation = 2 Find P(X = 8 )

Q: High school girls average 80 text messages daily. Assume the population standard deviation is 15…

A: Given information:

Q: On average, the fasting blood glucose for pregnant women is 80 with a standard deviation of 10. You…

A: Let X be the fasting blood glucose for pregnant women.Given, µ=80 and σ=10.

Q: professor at a local university finds that the mean exam grade for her students is 73 with a…

A: A professor at a local university finds that the mean exam grade for her students is 73 with a…

Q: res light bulbs that have a length of life that is normally distributed with mean equal to 821 hours…

A:

Q: A survey indicates that for each trip to the supermarket, a shopper spends an average of 45 minutes…

A: Given that, The lengthsnof time spent in the store are normally distributed and are represented by…

Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5…

A: given data,normal distribution μ=5σ=3probability that person will wait more than 9 minutes =?

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual…

A: Let X = IQ of an individual.  The probability that the person has an IQ greater than 140.

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: Assume that adults have IQ scores that are normally distributed with a mean of 103.6 and a standard…

A: Given that adults have IQ scores that are normally distributed with, Mean = 103.6 Standard deviation…

Q: Find the probability that an observation taken from a standard normal population will be more than…

A: We have to find given probability..

Q: A final exam in Reindeer Research Studies has a mean of 60 and a standard deviation of 5. If 25…

A: It is given that the mean is 60, the standard deviation is 5 and the sample size is 25.

Q: James and Harry play baseball and each of them can score one goal with the probabilities of 0.4 and…

A:

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

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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 IQ of highschool seniors is normally distributed with a mean of 100 and a standard deviation of…

A: The sample size is n=15. The population mean is μ=100. The population standard deviation is σ=15. We…

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

A: Answer:- Given , The standard deviation, σ = 200lbs  The mean steer weight, μ = 1300lbs  Using…

Q: the mean IQ of tweleve year old boys in a school district is 118; the standard deviation is 18. if a…

A: Obtain the probability that the mean of the sample is greater than 120. The probability that the…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: A different investor decides to invest $8000 in Fund A and $3000 in Fund B. Assuming the amounts…

A: Here's how to proceed:### 1. Investment DetailsYou've mentioned investments of $8000 in Fund A and…

Q: Children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the…

A: A normal distribution follows a bell shaped curve which is centred at the mean and it is also called…

Q: You play a game of chance that you can either win or lose (there are no other possibilities) until…

A: Probability of losing (p) the game is 0.61 Probability of winning the game = 1- p = 1- 0.61=0.39

Q: Q6- Assume the probability that a maple tree at age 5 grows less than 140 cm is equal to 0.2. If the…

A: Given Data: Let X represent the height of the maple tree P(x<140)=0.2 σ=81=9

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given : A civil engineer takes a public ride going to his firm.  The average time for his trip is 24…

Q: decimal places as needed.)

A: According to the scenario, it is assumed that adults have IQ scores that are normally distributed…

Q: The air control informs the pilot of an aircraft about the altitude of the centre of the air…

A: Given problem Given that   The air control informs the pilot of an aircraft about the altitude of…

Q: For example, let us assume that the mean quantity of cholesterol in eggs is 185 milligrams with a…

A:

Q: 40) The mean is µ = 15.2 and the standard deviation is o = 0.9. Find the probability that X is…

A:

Q: 4. The length of useful life of a fluorescent tube used inside the house is norm distributed. The…

A: Formula : Z =(X - μ)/σ

Q: The life of light bulbs is distributed normally. The standard deviation of the lifetime is 30 hours…

A: Answer: From the given data, Mean ( μ) = 525 Standard deviation(σ) = 30 X follows normal…

Q: 41) The mean is u = 137.0 and the standard deviation is o = 5.3. Find the probability that X is…

A: Given Mean=137 Standard deviations=5.3

Q: A population has a mean of 80 and a standard deviation of 7. A sample of 49 survey will be taken.…

A: Given Data: Let X represent the random variable Mean=80 SD=7   n=49 M~ Normal(80,7249)

Q: 80% of beans seeds sprout. Three seeds were planted. Find the distribution of the variable X =…

A: Given, n = 3 Probability that bean seeds sprout: p = 0.80 Probability that bean seeds does not…

Q: For a certain group of individuals, the average heart rate is 74 beats per minute. Assume the…

A: