A study shows that the cost of new textbook is approximately normally distributed with a mean P142 and a standard deviation P65. What is the probability that a randomly selected textbook costs; a) between P135.50 and P148.50? b) between P129 and P135.50? c) more than P155? d) below P150? e. What percentage of all textbooks costs more than P55?

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A: We want to find given probability for given questions

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13.5…

A:

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A:

Q: 1.The average length of adult rabbit is 30 cm with the standard deviation of 4 cm. If their length…

A: Given : Let X : Length of adult rabbit is normally distributed with Mean (μ) = 30  (in cm) Standard…

Q: In examining the invoices issued by a company, an auditor finds that the dollar amounts of invoices…

A:

Q: Given that the length an athlete throws a hammer is a normal random variable with mean 50 feet and…

A:

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: GivenMean(μ)=120standard deviation(σ)=20

Q: A small aircraft carries 20 passengers and has doors with a height of 72 in. Heights of men are…

A:

Q: The monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A:

Q: A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9…

A: We have given that a Binomial distribution with parameters p=65% = 0.65 , q=1-p = 0.35 and sample…

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A:

Q: The starting salary for a computer programmer major has a mean of $39,269 and a standard deviation…

A: Note: Hey there! Thank you for the question. Although the mean and standard deviation of the…

Q: Male players use a regulation basketball that weighs 22.0 ounces with a standard deviation of 1.2…

A: In question, Given that Male players use a regulation basketball that mean weighs 22.0 ounces with a…

Q: A web site reported in 2018 that 47% of all web traffic comes from laptops and desktops. Based on a…

A:

Q: Assume that the salaries of elementary school teachers in the United States are normally distributed…

A: Given: μ=32000, σ=3000, n=100 The corresponding z-value needed to be computed is:

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A: Provided information is ; Let X be the monthly utility bill mean(μ) = 100 standard deviation(σ)=15…

Q: Suppose that the distribution of typing speed in words per minute (wpm) for experienced typists…

A:

Q: A study at a college in the west coast reveals that, historically, 45% of their students are…

A: a) It is known that, the mean of the sampling distribution of sampling distribution, p-hat is equal…

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

A: Let X represent the random variable   Mean=140 SD=5   X~ Normal (140, 5^2)

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

A: From the provided information, Mean (µ) = 56 Standard deviation (σ) = 3.2 Let X be a random variable…

Q: The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard…

A:

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A: Here, mean is $100 and standard deviation is $14.

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A: Given Data Population Mean,μ = 100.0 Population Standard Deviation,σ = 12.0

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

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

Q: An experiment investigated whether the stem diameters of a tulip would change depending on whether…

A: Hello, thankyou for the question. According to our honor code we can answer only three sub parts at…

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: The mean is 120 minutes and the standard deviation is 20 minutes.

Q: A manufacturer of 8-watt LED downlights has past data that shows the lifespan of the downlight is…

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

Q: A Survey among Seniors revealed that the number of hours spent Studying the week before final exams…

A: Given Mean=25 Standard deviations=7

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: What is the probability that a transistor of this type will last at most 50 weeks? b. What is the…

A: Let , X→N(μ=40 , σ=5) Our aim id to find the following :  a. What is the probability that a…

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

A:

Q: chickens follow a normal distribution with a mean of ? kg and a standard deviation of ? kg. It is…

A: *Answer:

Q: Suppose that the lifetimes of light bubs are approximately normaily dstributed, with a mean of 56…

A:

Q: The number of chocolate chips in an​ 18-ounce bag of chocolate chip cookies is approximately…

A:

Q: Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56…

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

Q: In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with…

A:

Q: For a sample of n = 100, what is the standard deviation of the binomial distribution with p = .20…

A: Given : It is asked to find the of n = 100 With the given standard deviation p = 0.20 and q = .80

Q: In a certain experiment M & M candies are randomly grouped in bags of 40 pieces per bag. If 16 % of…

A:

Q: Suppose the heights of 18 year old men are approximately normally diatributed, with mean 67 inches…

A: Mean = 67 Standard deviation = 5

Q: Assume that the heights of adult puffins are normally distributed, with a mean of u = 16.1 inches…

A: According to our guidelines we can solve only the first three-part of the question. ize (n) = 16

Q: It is known that the distribution of the Wechsler Adult Intelligence test is n 130, and the standard…

A: Given, Mean (μ)= 130 Standard deviation (σ)=15

Q: The state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a…

A: Given data for California : Population Mean,μ = 22 Population Standard Deviation,σ = 4…

Q: According to an annual survey conducted by TheKnot.com, the mean cost of a wedding in 2017 was…

A: Given information: Mean=33, 391 Standard deviation=1500 a) The probability that a randomly selected…

Q: In a health examination survey of a prefecture in Japan, the population was found to have an average…

A: Given that Mean =99 ,s.d =12 Find p ( 90 < x <111 ) = ?

Q: According to a study, the average number of hours of TV viewing per household per week in the…

A: To find the probability that:   a.) The sample average is more than 52 hours   b.) The sample…

Q: What is the probability that an 18- to 24-year-old mobile subscriber spends less than 300 minutes…

A: From provided information, let X be variable that ACNielsen study indicates that mobile subscribers…

Q: 1. A study shows that the cost of new textbook is approximately normally distributed with a mean…

A:

Q: Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57…

A: Given, The proportion of light bulbs will last more than 60 hours is obtained as- The required…

Q: The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally…

A: Policy: Since you have posted a question with multiple sub-parts, we will solve first three subparts…