If families in a sall local community have anal incomes which are oally distributed with a men of $38,500 and a stadand deviation of 5400, then determine the percentile rank of a family with an income of 36,000 O30

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: Given : Let X : Amount of weight that male college students gain during their freshman  X~N(μ=1.4 ,…

Q: For each data set, compute the standard deviation. What is the standard deviation of the sample of…

A:

Q: In order to estimate the average electric usage per month, a sample of 121 houses was selected and…

A: Solution: From the given information, n=121 and σ=330.

Q: A survey found that women's heights are normally distributed with mean 62.4 in. and standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: In using the t distribution table, what value of t would correspond to an upper-tail area of 0.025…

A: The degrees of freedom is 22, and upper-tail area is 0.025. Computation of critical value: The…

Q: Suppose that the mean cranial capacity for men is 1090 cc (cubic centimeters) and that the standard…

A:

Q: Suppose a nomal distribution has a mean of 50 and a standard deviation of 3. What is Aes 47y OA 0.16…

A: Given that a normal distribution has a mean of 50 and a standard deviation of 3. That means μ=50 and…

Q: An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.3 minutes.…

A: Given: Sample size, n=35Sample mean, x¯=12.2Sample sd, s=2.2

Q: Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev's theorem to…

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Q: According to a survey by Harris Interactive conducted in February 2009 for the charitable agency…

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Q: The diameter of a brand of tennis balls is approXimately normally distributed, with a mean of 2 78…

A: Here in the above question is given that, Mean is 2.78    standard deviation is 0.03 And n is 12

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A: It is given that p is 0.10 and n is 500.

Q: Compute the standard deviation of the sampled proportions if p=.4 and n=500. Round to three places.

A: We want to find standard deviation  X~Binomial(n=500,p=0.4)

Q: A shop owner claims that on average, his shop has a daily turnover of R75 000. Test this claim at…

A: The answer is attached below,

Q: The distribution of room and board expenses per year at a four-year college is normally distributed…

A: We want to find z score  If Z Value lie outside (-3, 3) then it will be unusual.

Q: Below, maximum pronounced wave heights of 31 years are classified. The arithmetic average of the…

A: Given that population mean μ = 0.88 m and standard deviation σ = 0.06 m Level of significance α = 5%…

Q: Calculate the standard deviation of the following four observations: 12,13,15,20

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Q: Given that for a particular variable that is known to have a normal distribution, the µ = 15 and σ =…

A: Given that for a particular variable that is known to have a normal distribution, the µ = 15 and σ =…

Q: for a population with a standard deviation of o=20 find the z-score for each of the following…

A:

Q: Assume that females have pulse rates that are normally distributed with a mean of u = 73.0 beats per…

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Q: Calculate the standard deviation of the following dat-

A: Let , the table given below,  Age(xi) No. of persond dying(fi) fixi fixi2 10 15 150 1500 20…

Q: With a mean of 40, and SEM = 5, what values would encompass 99% of scores (assume sigma is known)?

A: Introduction: Let x be the continuous random variable and it said to be follows normal distribution…

Q: The accounting department at Weston Materials, Inc., a national manufacturter of unattached garages,…

A:

Q: The batteries from a certain manufacturer have a mean lifetime of 830 hours, with a standard…

A: (a)   Determine approximate percentage of the batteries have lifetimes between 690 hours and 970…

Q: Suppose that the mean cranial capacity for men is 1070 cc (cubic centimeters) and that the standard…

A: We need to complete the given statements assuming that men's cranial capacities are normally…

Q: The following are observations on the number of monthly Zoom sessions attended by a sample of 10…

A: Standard deviation is a measure of dispersion and important measure of dispersion. It used to…

Q: Given data that is normally distributed and has a mean of 5.6 and a standard deviation of 1.2, what…

A: Given that, μ=5.6,σ=1.2x=6.1 The formula for calculating the z-value for a x-value is,

Q: (a) Determine the standard deviation of recumbent length for all 20 observations. cm (Round to two…

A: here sample size n= 20 here given data recumbent length  xi  = recumbent length

Q: For a three parameter weibull distribution with B= 1.54 hr, ? = 8500, and t0 = 50 hr, Find a,R(150…

A: Three parameter weibull distribution, Now we have to answer for mentioned questions. We have to…

Q: A survey found that women's heights are normally distributed with mean 63.3 in. and standard…

A: Let "X" be the height of men. Refer Standard normal table/Z-table OR use excel formula…

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when n =…

A:

Q: A normal distribution has a mean of u standard deviation of o = 12. For each of the follow- ing…

A: Given info: Here, mean, µ = 30 and σ = 12

Q: A normel curve with a mean of 400 and a standard deviation of 50 is shon. Shade the rogion under the…

A: The mean is 400 and the standard deviation is 50.

Q: IF babies Neighto are normally distributed with a mean ot 3.23ky and a standard deviantion of 0.87kg…

A:

Q: If one normal distribution has a standard deviation of 5, and another has a standard deviation of…

A: Given that  One normal distribution has standard deviation is 5. Another has standard deviation of…

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: Assume that females have pulse rates that are normally distributed with a mean of u = 72.0 beats per…

A: Given that  The pulse rates are normally distributed. Mean = 72 beats per minute. standard deviation…

Q: Suppose that the mean cranial capacity for men is 1170 cc (cubic centimeters) and that the standard…

A: (a) Given that, the value of mean is μ=1170 and standard deviation is σ=300 cc. Use the Empirical…

Q: calculate the standard deviation of the following four observations: 13,14,16,18

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Q: Assume that the monthly food expenditures of families of a certain size in one economic group are…

A: We have to find out given probabiity..

Q: The weights of a certain dog breed are approximately normally distributed with a mean of u = 53…

A: Given: μ = 53σ = 5

Q: Given the population of men has normally distributed weights with a mean of 172 lb and a standard…

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

Q: Show the salaries of the following grads on the normal distribution and on the standard normal…

A: Salaries of recent grades are approximately normally distributed with mean of $200,000 and standard…

Q: When comparing two​ populations, the larger the standard​ deviation, the more dispersion the…

A: Note: Thank you for the question. Since only the statement is given, we have considered it as a true…

Q: To determine the organic material in a dried lake bed, the percent carbon by mass is measured at two…

A: F test is used to check whether the variances or standard deviations of two groups differ (or) not.…

Q: In Country A, the population mean height for 10-year-old girls is 54.3 inches with a standard…

A:

Q: Compute the standard deviation of the sampled proportions if p=.8 and n=50. Round to three places.

A: Given,n=50p=0.8

Q: For a population with a standard deviation of o = 5, find the z-scores for the locations of 20…

A: For a population with a standard deviation of σ = 5.

Q: The weights of a certain dog breed are approximately normally distributed with a mean of u = 53…

A: Given that  The weights of dog are normally distributed. Mean (μ) = 53 pounds Standard deviation (σ)…

Q: Given that Z is a standard normal random variable in a standard deviation, what is the value of Z if…

A: Let z be the random variabe which is normally distributed with mean,u=0 and standard deviation,σ=1