A survey indicates that the customers of a local supermarket spend an average of 45 minutes shopping with a standard deviation of 12 minutes. The lengths of time spent in the supermarket are normally distributed, which are represented by the variable XX. How many shoppers among a population of 200 people spend 24 to 54 minutes in the supermarket?

Q: The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: a. The difference is lb. (Type an integer or a decimal. Do not round.) b. The difference is standard…

A: Given, Highest weight=5.15 lb Mean=2.317 lb Standard deviation=1.661 lb

Q: udnury's bowling ball factory in llinois , in pounds, of 9 of the bowling balls produced that day…

A: See the handwritten solution

Q: A data set lists weights​ (lb) of plastic discarded by households. The highest weight is 5.37 ​lb,…

A: Measure of central tendency measures the central or average value of a dataset. Measured of…

Q: The weight of football players is normally distributed with a mean of 200 pounds and a standard…

A: Given,mean(μ)=200standard deviation(σ)=25

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

A: Given information-We have given that adults have IQ scores that are normally distributed.μ= 105σ =…

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

A: Obtain the Z-score for the random variable X equals 129. The Z-score for the random variable X…

Q: Set A has a standard deviation of 2 and Set B has a standard deviation of 5. Which statement is…

A: Solve the following

Q: Find the standard deviation for the population data set. You must clearly show your work with…

A: Given data 2, 5, 9, 11, 13 Mean,  x = ∑i xin= 2+5+9+11+135 = 8 xi (xi-x¯) (xi-x¯)2 2 -6 36 5…

Q: A consumer survey indicates that the average household spends μ = $185 on groceries each week. The…

A: From the provided information, Mean (µ) = $185 Standard deviation (σ) = $25 Let X be a random…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 65…

A: The random variable  be the speed of a sample of vehicles along a stretch of highway.Mean: miles…

Q: A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.31 lb, the…

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

Q: A particular fruit's weights are normally distributed, with a mean of 712 grams and a standard…

A: Given Information: A particular fruit's weights are normally distributed, with a mean of 712 grams…

Q: A survey of 21 accountants finds that they spend a mean of $45.00 each week on lunch with a standard…

A: The provided data is,

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 268 days…

A: 1. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Americans (on average) individually eat 16 pounds of seafood each year with a standard deviation of…

A: Given that   x̄ = 14 , μ = 16 , ? = 7 , n = 4

Q: The average annual precipitation in Vancouver, British Columbia is 1300 mm. Assuming that the…

A: The value of  μ=1300μ+σ=1530,   μ+σ=1070μ+2σ=1760, μ+2σ=840μ+3σ=1990, μ+3σ=610 a)  Annual…

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

A:

Q: sample subjects medium lead levels in their study done with high lead levels. Assume that the two…

A: Solution: Population 1 :Subjects with medium lead levels  Population2: Subjects with high lead…

Q: X. IQ Scores Medium Lead Level O High Lead Level 72 n2 11 84 92 X2% D 88.555 85 87 S2 = 10.083 %3D…

A:

Q: The mean time taken by all participants to run a road race was found to be 155 minutes with a…

A: Chebyshev's rule :  According to Chebyshev's rule, the probability that XX is within kk standard…

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

A: Let X denote the IQ scores of adults. Given that X follows N(mean = 105, SD = 20), then Z = (X -…

Q: Assume that the SAT test scores are normally distributed with a mean score of 1200 and a…

A:

Q: Find the standard deviation of the following values: 2.58x10-5, 2.33x10-5, 3.28x10-5, 3.57x10-5

A:

Q: Cars on I-40 have a mean speed of 73 MPH at a certain mile marker, with a standard deviation of 8…

A: Given data,μ=73σ=8P(X>78)=?

Q: The average driver spends $54 at the gas station each week with a standard deviation of $8. Assuming…

A:

Q: Assume the selling prices of homes in a particular community follow a normal distribution with a…

A: GivenMean(μ)=263100standard deviation(σ)=43200

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a…

A: Let X be the random variable from normal distribution with mean (μ) = 100 and standard deviation (σ)…

Q: 7. A group of fish specialists are trying to gain information about the population of trout in a…

A:

Q: As a group, the Dutch are among the tallest people in the world. The average Dutch man is 184 cm…

A: For the distribution of the height of Dutchmen (which is specified to be approximately normally…

Q: In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of…

A: 1.   From the given information, the sample size is 250.  The population standard deviation is 2.5.…

Q: For a certain type of job, it costs a copany an average of $231 to train an employee to perform the…

A: From the provided information, Mean (µ) = 231 Standard deviation (σ) = 5

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.