1. A bell-shaped distribution has a mean µ 1. Find the proportion of data between 1200 and 1540. 2. Find the proportion of data above 1540. 2. A data set with an unknown distribution has mean µ = 360 and standard deviation o = 1200 and standard deviation o = 340. :20. 1. State Chebyshev Theorem. 2. Provide a lower estimate of the proportion of data between 315 and 405.

Q: Suppose that the manager of a construction supply house determined from historical recordsthat…

A: a) The expected lead time demand = 50 tons. Risk = 3% The demand during lead time is normally…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 35 beats…

A:

Q: A random sample of 40 students has a mean annual earnings of $3120 and assume that the population…

A: The margin of Error (MoR): It is the Range of values that has the sample statistics in the…

Q: A random sample of 40 students has a mean annual earnings of​ $3120 and assume that the population…

A: The assumed margin of error for a provided true standard deviation and a large sample (i.e n>30)…

Q: If the values of the mean and standard deviation of the following frequency distribution (obtained…

A: Here given : Mean = 135.3 Standard deviation = 9.6 We have to calculate actual class intervals.

Q: 1. The College dean of the School of Criminal Justice Education asks the statistics Professor to…

A: Given that  Population standard deviation =3 Margin of error =E =1 99% confidence.

Q: The average expenditure on Valentine's day was expected to. E 100.89. Do male and female cinsumers…

A: B. The margin of error at 99% confidence is 13.43971 and it is calculated below: From the given…

Q: In​ 2007, the mean rate of violent crime​ (per 100,000​ people) for 10 regions in the northeast of a…

A: Solution: Let X be the violent crime rate. From the given information, X follows normal distribution…

Q: Suppose the distribution of yearly car repairs cost has a normal distribution with a mean of $400…

A: Determine the mean repair cost that bounds the top 18% of car repair costs. The mean repair cost…

Q: Two machines, X and Y, produce earbuds. Let X represent the diameter of an earbud produced by…

A: Mean is the average of all the observations. It is calculated by dividing the number of observations…

Q: has the value t = 2.24. If the standard deviation from the sample is 2.4, what is the mea %3D O 16 O…

A: The formula for test statistic is,

Q: 8 Assume total cholesterol value for a certain population is approximately bell shaped with a mean…

A: Consider,X be a total cholesterol value that follows normally distribution with man of 200mg/ 100ml…

Q: Suppose the mean and standard deviation of the GPAs at Loyola are  Xbar = 1.675; and s = 1.047…

A:

Q: On a dry surface, the braking distance of a fully loaded tractor trailer is 370 ft with a standard…

A: We have given that.   X~N( μ , ?^2 )   μ=370 , ? =40   Z-score =( x - μ )/?

Q: Assume that X has a normal distribution where the mean is μ= 15.2 and the standard deviation is σ=…

A: Given information: Mean of the distribution, μ= 15.2  Standard deviation of the distribution, σ=…

Q: Suppose that the weights of packages shipped by Atlas Shipping are normally distributed, with mean…

A:

Q: d) Assume that the mean and standard deviation of this lacrosse team are the same as the mean and…

A:

Q: Suppose a population is known to be normally distributed with a mean, µ, equal to 116 and a standard…

A: Let X denote the distribution of population. Given that X ~ N(mean = 116, SD = 14) Then Z = (X -…

Q: 24. Assume that the resting heart rate in humans is normally distributed with a population mean of…

A: X be the resting heart rate in humans is normally distributed with a population mean μof 72 bpm and…

Q: Given that a data set has a mean of H = 125.7 and a standard deviation of o = 12.1 , find the…

A:

Q: A scientist believes that the length of a newly discovered species of fish can be assumed to follow…

A: Note : We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: 6.21. For two observations 'a' and 'b', show that standard deviation is half the disto between them.

A:

Q: Given that it is normally distributed with a standard deviation of 8.025 cm. The engineer rejected…

A: we have to find mean value for given data...

Q: Suppose the weights of 3-month-old babies are normally distributed-baby boys with a mean of 14.4…

A: For baby girls, μ=12.8σ=1.7

Q: 3. The heart rate for a group of patients at a local hospital is normally distributed with a mean of…

A: Given that mu = 97,s.d=18

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A:

Q: Suppose that the flying hours for aircraft operated by regional airlines in the U.S. during 2006 are…

A: Given Information Mean µ = 2500 Standard deviation(σ) = 400 P (Z > z) = 0.975 P(Z<z) = 1 –…

Q: Suppose the data have a bell-shaped distribution with a mean of 30 and a standard deviation of 5.…

A: Given data ,u=30σ=5

Q: It assumed that the maximum temperature in Oman is normally distributed with a mean of 8 and a…

A: It is given that the maximum temperature in Oman is distributed normally with mean 8 and standard…

Q: QS. The amount of sugar (X) contained in 2-kg packets is actually normally distributed with a mean…

A: Given : For (d) u(mean)=2.03 kg  σ(standard deviation)=0.014  kg For (e) u(mean)=2.05 kg  σ(standard…

Q: 3. Given that the sample standard deviation for Average Hourly Wage Rate for Indigenous Population…

A: Given that 3. Given that the sample standard deviation for Average Hourly Wage Rate for Indigenous…

Q: Suppose that the distribution of scores on the Graduate Record Exam (GRE) is approximately normal,…

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

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

A: The empirical rule says that for normal distribution, 68%, 95%, and 99.7% of the values lie within…

Q: Suppose that the average score on the GMAT exam is 500 and that standard deviation of all sources is…

A: the average score on the GMAT exam is 500  i.e,mean=500standard deviation of all sources is  = 100…

Q: 1.D.G co. has an average gross sales of 37 million per week from their products in all outlets with…

A: Given Pop mean, μ=37Pop sd, σ=6Sample size, n=32Sample mean, x¯=34α=0.05

Q: Suppose the length of the newborn babies in a community is normally distributed with an average of…

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

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats…

A: It is given that the mean is 78.0 and the standard deviation is 20.7.

Q: In a population distribution, a score of X = 28 corresponds to z = −1.00 and a score of X = 34…

A: Where, For X=28 & z=-1.00 For X=34 & z=-0.50

Q: Suppose that vehicle speeds at an interstate location have a normal distribution with a mean equal…

A: The random variable vehicle speed follows normal distribution. The population mean is 70. The…

Q: 36 - ))The standard deviation of a population of 400 volumes is 70 cm. In the case of…

A: SD=70 To Find: Sample size (n)

Q: Suppose you have already calculated the mean, the average deviation, and the standard deviation of…

A: (a) Condition for Average Deviation: If the value of the observation is increased or decreased by a…

Q: 1. The monthly mean starting salary for clinical officers in rural health facilities is 500,000 UGX…

A:

Q: In a population that is normally distributed with a mean X and standard deviation Y, determine the…

A: Empirical rules :1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3) P(μ-3σ<X<μ+3σ)=99.7%

Q: 30. The distribution of weights for 12-month-old baby girls in the US is ap- proximately normal with…

A: we have to find percentile value......

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 31 beats…

A: x̅ = mean pulse rate = 79.0 beats per minute s =  standard deviation of pulse rate = 14.7 beats per…

Q: The weight of an organ in adult males has a bell-shaped distribution with a mean of 350 grams and a…

A:

Q: From previous experience it is known that the percentage yield of a chemical process is normally…

A: Here use basic of confidence interval

Q: Assume the population of 5 year children in the U.S. have a population mean weight of 44 lbs. with a…

A: Given data: Mean = 44 lbs Population standard deviation =2.89 lbs Sample size = 35 To find: What…

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.