Diameters of bearings in mass production are normally distributed with mean 0.35 inch and standard deviation 0.02 inch. Bearing specifications call for diameters of 0.33±0.04 inch. What is the probability of a defective bearing being produced?

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: The 90th percentile is 12,730.09, which is obtained by using the Excel function…

Q: e standard deviation of a sampling distribution is referred to as its standard error.

A: Sampling distribution is the probability distribution of the statistic of the sample like sample…

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: The properties of the normal distribution is,   The Normal distribution curve is and bell shaped…

Q: Pay your bills: In a large sample of customer accounts, a utility company determined that the…

A: Given that the average is 32 and standard deviation is 6 days. Let us consider 68% of the customer…

Q: Assume that the hay fever rate in each age group has an approximately normal distribution. Do the…

A: Given : Claim : The age group over 50 has a lower rate of hay fever.

Q: A machine packages shirt in bags with a mean weight of 3kg. A random sample of 20 bag as has a mean…

A: Introduction: Parameter: A parameter is a population characteristic of interest in a statistical…

Q: A machine used for  filling plastic bottles with a soft drink has a known standard deviation of 0.05…

A: Sampling distribution of sample Mean:   From the central Limit theorem, the sampling distribution of…

Q: The serum cholesterol level X in 14-year-old boys has approximately a normal distribution with mean…

A: Answer -  A normal distribution with mean μ = 170 and standard deviation  σ = 30.               Find…

Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…

A: Given that ; Mean = 88 wpm S. D = 10 wpm Here we use tha concept of standard normal distribution.

Q: The average rent in a city is $3,250 per month with a standard deviation of $150. Assume that rents…

A:

Q: alespeople for a solar technology company have average annual sales of $200,000, with a standard…

A: Statistics is a branch of mathematics that gives us the tools to deal with large quantities of data…

Q: The standard normal distribution has a mean of zero and a standard deviation of one. TRUE or FALSE

A: A standard normal distribution has a mean zero and standard deviation is one is called as standard…

Q: Vehicle speeds at a highway location have a normal distribution with a mean of 65 mph and a standard…

A: Let X be the vehicle speed follow normal distribution  X~N(mean=μ=65, standard deviations=σ=5)

Q: Assume the random variable X is normally​ distributed, with mean μ=45 and standard deviation σ=8.…

A: Given,μ=45σ=8P(X<x)=13%=0.13x=?

Q: A large retailer sells large cereal boxes. The boxes have a standard deviation of 0.3, and 30% of…

A: Given Data: σ=0.3   P(X<32)=0.3

Q: Based on available information, lead time demand for PC jump drives averages 53 units (normally…

A:

Q: The average amount of money spent by an Amazon customer per month is $1296 with standard deviation…

A: Mean = 1296 Standard deviation = 110

Q: normal distribution has a mean of mu = 40 with sd =5. What is the probability of sampling an…

A: we want to find probability of sampling an individual with a score greater than 48

Q: Let x be the number of heads when a coin is tossed 5 times. What is the expected value E(x)? What is…

A:

Q: Assume the random variable X is normally​ distributed, with mean μ=59 and standard deviation σ=9.…

A: Solution: From the given information, X follows normal distribution with mean µ=59 and a standard…

Q: 2. Compare the standard deviation to the population standard deviation. Then, compute for the…

A: Given Population standard deviations σ=1419, n=sample size=5, standard error=se=634.60

Q: Salaries for Macdonald's workers are normally distributed with a mean of $30,000 and a standard…

A: Given: μ=30000 and σ=5000. From the given information:PZ<z=95%⇒PZ<z=0.95

Q: A normal distribution is defined by two parameters, the mean and the __________. mode standard…

A: A normal distribution is defined by two parameters.

Q: A forester measures the diameters of 40 redwood trees in a large wooded area that is for sale. It is…

A: From the given information, The mean diameter of redwood trees is 10.4 ft and a standard deviation…

Q: The length of time it takes college students to find parking spot in the library parking lot follows…

A:

Q: A standard normal distribution has a mean of one and a standard deviation of three. True False

A: The standard normal distribution is a normal distribution with a mean of zero and standard deviation…

Q: Surgical instruments manufactured in Sialkot have a mean weight = 15 pounds and a standard deviation…

A: Obtain the value of c. The value of C is obtained below as follows:

Q: The United States exports hundreds of thousands of metric tons of wood chips each year to Japan. The…

A: (a)   Obtain the probability of U.S wood chip exports to Japan exceeding 410 thousand metric tons in…

Q: A sample size 15 has a mean of 90, population mean of 75, and a standard deviation of 10. Find the…

A:

Q: 2. Maple tree diameters in a forest area are normally distributed with mean 10 inches and standard…

A:

Q: The failure rate of a Weibull distribution can be DFR or CFR of IFR depending on tjr scale parameter…

A: 1) TRUE Explanation : Most widely used parametric family of distributions. a = 1 � CFR a < 1 �…

Q: ind the required areas under the normal curve if the scores are assumed to be normal distributed…

A: Given: Mean = 50 Standard deviation = 10

Q: Assume the random variable X is normally​ distributed, with mean μ=50 and standard deviation σ=7…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Assume the random variable X is normally distributed with mean μ=50 and standard deviation σ=7. Find…

A: Solution:From the given information, mean value is 50, standard deviation value is 7. Let the random…

Q: In a log normal distribution. What is the expected value of the mean and the Std. And what is the…

A: The mean and standard deviation of log normal distribution is to be found out. The log normal…

Q: 1. A sample of 49 observations is taken from a normal population with a standard deviation of 10.…

A:

Q: The weight of high school football players is normally distributed with a mean of 195 pounds and a…

A: Given, population mean = 195 standard deviation = 225 x = 242 P(x >242 ) = 1 - P(x < 242) = 1…

Q: Find the 95% confidence interval for the mean. A) Assume standard deviation = ở B) Assume o…

A: Given Data : Standard Deviation, s: 0.007071 Count, N: 9 Sum, Σx: 0.69 Mean, x̄: 0.0766666…

Q: A supplier is selling lumber to a building supply company.  The building supply company requires…

A: The building supply company requires that the overall length of a particular type of board measure…

Q: ACT scores at Ardrey Kell High School are Normally distributed with mean 26 and standard deviation…

A: Two sample Z test

Q: Assume the random variable X is normally​ distributed, with mean μ=47 and standard deviation σ=8.…

A:

Q: What is the standard deviation of the standard normal curve?

A: Solution-: We find the meaning of standard deviation of the standard normal curve?

Q: The length of time it takes college students to find a parking spot in the library parking lot…

A: Let "X" be the length of time it takes college students to find a parking spot in the library…

Q: In a standard normal distribution 95% of the data is within +/- _______standard deviations of the…

A: In a standard normal distribution 95% of the data is within +/- _______standard deviations of the…

Q: The mean mass of 500 kudu at a private game park is 151 kg and the standard deviation is 15kg.…

A:

Q: The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20.…

A: Given, Mean = 250 Standard deviation = 20

Q: Diameters of bearings in mass production are normally distributed with mean 0.25 inch and standard…

A: The mean = 0.25 Standard deviation = 0.01 This is a normal distribution. Nσ , μ = N0.01 , 0.25

Q: The average amount of money spent by an Amazon customer per month is $1296 with standard deviation…

A: Mean = 1296 Standard deviation = 110 Sample size = 15

Q: Normal curves can be used to determine if it is acceptable to use standard deviation to determine if…

A: Topic:- algebra

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.