Thicknesses of shims are normally distributed with mean 1.5 mm and standard deviation 0.2 mm. Three shims are stacked, one atop another. a) Find the probability that the stack is more than 5mmthick. b) Find the 80th percentile of the stack thickness. c) What is the minimum number of shims to be stacked so that the probability that the stack is more than 5 mm thick is at least 0.99?

Q: A test in statistics for decision making course was administered to 2500 MBA students. The test…

A: Let us assume X=the score Given that X follows a normal distribution with mean=42 and variance=576.…

Q: We study endurance in marathon runners and sprinters. We calculate a z-score for the difference…

A: Introduction Hypothesis is an assumption that is being tested.

Q: 0 lb.

A: According to the sum, weights of men are normally distributed with a mean of 172 lb and a standard…

Q: Find the indicated probability. 43) The diameters of bolts produced by a certain machine are…

A: GivenMean(μ)=0.30standard deviation(σ)=0.01

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A: Given Information: Assume the speeds at which cars pass through a checkpoint are normally…

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A:

Q: SAT exam scores are normally distributed with mean 500 and standard deviation 100.  Give the…

A: Let X= SAT exam score  Given that X follows normal distribution with mean=500 and standard deviation…

Q: Exercise 1: The weight of a random scone sold by your favorite bakery has a mean of 105g I a…

A: Given: μ = 105 σ = 5 Formula Used: Z-score= X-μσn

Q: SAT exam scores are normally distributed with mean 500 and standard deviation 100.  Give the…

A: Let X= SAT exam score  Given that X follows normal distribution with mean=500 and standard deviation…

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 79…

A: (a)   Determine the distribution of X.   The distribution of X is determined below as follows:

Q: he height of the candidate for Police Officer at JayBie Town is normally distributed with a ean 165…

A: Let X be the random variable from normal distribution with mean (μ) = 165 cm and standard deviation…

Q: Suppose the distribution of the weights of ground beef follows a normal distribution with a mean of…

A: Let X denote the distribution of the weights of ground beef follows a normal distribution with a…

Q: a city's hotel rates (x) follow a normal distribution with mean $115 and standard deviation $21. a)…

A: We have given that  mu= 115 , sigma =21  Row score  X=140 Z-score =(x-mu)/sigma

Q: The company produces 100 kits daily and each kit has a mean output voltage of 12.5 volts and a…

A: Mean()=12.5standard deviation()=2.2

Q: PrActice Suppose that the probability is .4 that chocolate lollipops will fall from the sky on any…

A: It is given that the probability is 0.4 that chocolate lollipops will fall from the sky on any given…

Q: Blood glucose levels are normally distributed with a mean of 85 mg/dl and a standard deviation of 25…

A: Answer: Given that:   ‘x’ is Normally distributed with                 Mean  µ =85       standard…

Q: random variable has a mean of 6.5 and a standard deviation of 3.45. With a random sample of 40…

A:

Q: Q2) The recording speed of cars driving to arrive the house. The speed limit read 20 mph. These…

A: Given, n = 100 Mean, μ = 23.84 standard deviation, σ = 3.56

Q: Assume that the life of a roller bearing follows a Weibull distribution with parameters β = 2 and δ…

A:

Q: ind the indicated probability or percentage for the normally distributed variable. Assume that the…

A: Given data,μ=5.6σ=0.070P(5.48<X<5.82)=?

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A: From the provided information,n = 50

Q: Provide an appropriate response. 21) One year, professional sports players salaries averaged $1.9…

A:

Q: The lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard…

A:

Q: b) A factory produces bags of sugar with a labelled weight of 500 g. The weights of the bags are…

A:

Q: iron rods are produced in 6 groups. they each are required to tolerate a total length between 166…

A: Given Information: Consider the variable X which follows uniform distribution with parameters…

Q: The probability of a radar station detecting an enemy plane is 0.85. If 4 stations are in use, what…

A: The probability of a radar station detecting an enemy plane is 0.85. If 4 stations are in use, what…

Q: Jim Cramer hosts CNBC's “Mad Money" program. Mr. Cramer regularly makes suggestions about which…

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Q: Assume that women’s heights are normally distributed with a mean of 63.6 inches and a standard…

A:

Q: iven the number of trials and the probability of success, find the mean, standard deviation, and the…

A: We know that  n= number of trials  p= success of probability  q=1 - p X~binomial ( n,p)

Q: BA six-year study in a certain country found that birth weights of newborns were normally…

A: it follows normal distribution Z=x-μσZ=3000-3758496=-758496=-1.5282

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A: Assume the random variable x defines the fill amount of bottles of a soft drink.

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Q: teger so it is certainly not normal. a. Let X be the mean number of accidents per week at the…

A: It is given that Mean = 2.2Standard deviation = 1.4

Q: A recent study found that 27% of adults often purchase used items istead of new ones. Assume a…

A: Given information Probability that the adults often purchase used items instead of old ones = 0.27…

Q: The average weight of an apple at John's orchard is 162 grams with a standard deviation of 8 grams.…

A:

Q: that the heights of students at a university follow a normal distribution with a mean of 170 cm and…

A: It is given that Suppose that the heights of students at a university follow a…

Q: The compressive strength of samples of cement can be modeled by a normal distribution with a mean of…

A: Given,   Mean  = 6000 Standard deviation = 100   The objective is to find the probability that the…

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.