Consider a Uniform Distribution U(19, 54), compute its standard deviation to the nearest thousandth.
Q: The 87th percentile is (Round to two decimal places as needed.)
A: It is given that Mean, μ = 50 Standard deviation, σ = 7
Q: The gestation period (length of pregnancy) of a certain species is approxi- mately normally…
A: Given,mean(μ)=6standard deviation(σ)=12
Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…
A: Given body temperature of healthy adults have a bell shaped curve with mean 98.17oF and standard…
Q: Consider the distribution of largest variance on an interval of length 0.6726. Suppose the mean of…
A: Given : Mean = 0.5395 Variance=0.6726 Standard deviation= √variance Standard deviation= √0.6726…
Q: Assume that females have pulse rates that are normally distributed with a mean of mu equals 74.0…
A: Given the pulse rates of females are normally distributed with mean 74 beats per minute and standard…
Q: At a large company, users log on to the computer network according to a Poisson process, with a mean…
A:
Q: According to a random sample taken at 12 AM., body temperatures of healthy adults have a bell-shaped…
A: Given Information Mean µ = 98.25 F Standard deviation σ = 0.66 F As per the Chebychev’s formula
Q: Suppose times, in minutes for running marathons have an unknown distribution with mean 296 and…
A: According to the central limit theorem, the sampling distribution of the sample mean is…
Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…
A: From the provided information, Using the Chebyshev’s Inequality,
Q: The population of weights of a particular fruit is normally distributed, with a mean of 265 grams…
A: Let X denote the population of weights of a particular fruit is normally distributed, with a mean of…
Q: An unknown distribution has a mean of 45 and a standard deviation c Samples of size n = 30 are drawn…
A: X
Q: the population of weights of a particular fruit is normally distributed, with a mean of 766 grams…
A:
Q: Mary drives to work each morning, and the trip takes an average of mu = 38 minutes. The distribution…
A:
Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…
A:
Q: Using Chebyshev's theorem, what do we know about the percentage of healthy adults with body…
A: Given , Mean Value = 98.05 Standard deviation = 0.62 According to Chebyshev's Theorem for a bell…
Q: Bags of jelly beans have a mean weight of 353 gm with a standard deviation of 6 gm. Use Chebyshev's…
A: Chebyshev’s Inequality: By, the Chebyshev’s Inequality, the formula for the lower bound is,…
Q: The weight of adobe bricks for construction is normally distributed with an average of 2 pounds and…
A: given: μ=2σ=0.5n=24
Q: The lifetimes of a certain electronic component are known to be normally distributed with a mean of…
A: It is given that the lifetimes of a certain electronic component are known to be normally…
Q: Consider the distribution of largest variance on an interval of length 0.6726. Suppose the mean of…
A: Empirical rule : 68 - 95 - 99.7 rule Means : 68% values lie within 1 standard deviations 95%…
Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…
A: Given that Mean() = 0Standard deviation() = 1X ~ N (, )= N(0,1)
Q: The capacitances of certain electronic components have a normal distribution with a mean u = 175 ar…
A: Given : The capacitances of certain electronic components have a normal dist. with Mean (μ) = 175…
Q: It is known that the average monthly sales of marketing personnel of a company is 20000 TL and 4000…
A: Let X denote the monthly sales of marketing personnel of the company. Assume that the monthly sales…
Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…
A: It is given that k=2.
Q: According to a study, the salaries of registered nurses are normally distributed with a mean of…
A: Given Data : Population Mean,μ = 58310 Population Standard Deviation,σ = 5038
Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…
A: Given that the readings at freezing on a bundle of thermometers are normally distributed with, Mean…
Q: A population has a mean μ = 137 and a standard deviation o=20. Find the mean and standard deviation…
A: The question is about sampling distributionGiven :Mean of Population ( ) = 137Standard deviation…
Q: Assume that the readings at freezing on a bundle of thermometers are normally distributed with a…
A:
Q: 2. Suppose that the number of trees, X, in a randomly selected one acre prot of land has mean u= 50…
A: Given that, μ=50,σ=14,n=49 (a) The mean and standard deviation of the sampling distribution of the…
Q: The lifetime of a particular component is normally distributed with a mean of 1000 hours and a…
A: Given DataMean = 1000Standard deviation = 100probability that a randomly drawn component will last…
Q: The light bulbs produced by a generic manufacturer have a stated average life of 1,146 hours. Assume…
A: Suppose X be the lifetime of the bulb. The distribution of X is normal with mean is 1146 hours and…
Q: The length of time it takes to fill an order at a XYZ sandwich shop is normally distributed with a…
A: From the provided information,The mean (µ) of the distribution is 7 minutes.The distribution of Xi…
Q: The ages of job applicants for a security guard position are uniformly distributed to a radiour…
A:
Q: A lightbulb is advertised as lasting 1000 hours with a standard deviation of 150 hours. Assume the…
A: It is given that the mean and standard deviation are 1,000 and 150, respectively.
Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…
A: Mean()=98.25standard deviation()=0.67
Q: The average weight of adult Atlantic salmons is 10.02 pounds with a standard deviation of 2.89…
A: According to the provided information, Mean (μ) = 10.02 Standard Deviation (σ) = 2.89
Q: Assume that females have pulse rates that are normally distributed with a mean of μ=73.0 beats per…
A:
Q: In a study, it was determined that the weekly income of the students studying in city A is 314 TL…
A: Given: Mean, μ=314 TL Standard deviation, σ=45 TL X = 285 To compute : P (X<285) The formula of z…
Q: Assume that females have pulse rates that are normally distributed with a mean of mu equals 74.0…
A: Denote X as the pulse rates of females. It is given that X is normally distributed, with mean μ = 74…
Q: A population has a mean of 300 and a standard deviation of 90. Suppose a sample of size 100 is…
A: Introduction: The sampling distribution of the sample mean based on a sample of size n, taken from a…
Q: Assume that females have pulse rates that are normally distributed with a mean of µ= 76.0 beats per…
A:
Q: Assume that the amount of weight that male college students gain during their freshman year are…
A: NNote: this probability value calculated from standard normal distribution table
Step by step
Solved in 2 steps with 2 images
- Steve, the underpaid graduate student, is interested in determining how many final grades in Dr. Boehring’sclass vary. Steve determines that the standard deviation of final grades in Dr. Tahkstumusch’s class is 7. Steve takes a random sample of 50 final grades from Dr. Boehring’s class and computes a standard deviation of 9.Assume that the final grades in Dr. Boehring’s class are normally distributed. At the 5% significance level, do the data provide sufficient evidence to conclude that the standard deviationσof final grades in Dr. Boehring’sclass are greater than 7? Use the rejection region approach for all of the parts below. (a) Define the appropriate hypotheses (b)State and verify that the proper assumptions hold (c)Use the rejection region approach to perform the test (d) Provide support for your decision regarding the null hypothesis (e) Write a summary of your conclusion in the context of the problemAssume that weights of adult females are normally distributed with a mean of 79 kg and a standard deviation of 20 kg. What percentage of individual adult females have weights between 73 kg and 85 kg? If samples of 64 adult females are randomly selected and the mean weight is computed for each sample, what percentage of the sample means are between 73 kg and 85 kg? The percentage of individual adult females with weights between 73 kg and 85 kg is 23.6 % (Round to one decimal place as needed.) The percentage of samples of 64 adult females with mean weights between 73 kg and 85 kg is (Round to one decimal place as needed.)Assume that women's heights are normally distributed with a mean 64.5 in, and a standard deviation of 2.3 in. (a) if 1 woman is randomly selected, find the probability that her height is less than 65 in.(b) if 46 women are randomly selected, find the probability that they have a mean height less than 65 in.
- A population has a mean p= 160 and a standard deviation o=22. Find the mean and standard deviation of the sampling distribution of sample means with sample size n= 45. The mean is H- = |, and the standard deviation is o- = (Round to three decimal places as needed.)In a random sample of 750 toner cartridges, the mean number of a toner cartridge can print is 4302 and the standard deviation is 340. Assume the distribution of data is normally distributed The company that makes the toner cartridges guarantees to replace any cartridge that prints fewer than 3282. Approximately how many of the cartridges in the sample would you expect to be replaced under the guarantee policy?The average homicide rate for the cities and towns in a state is 10 per 100,000 population with a standard deviation of 2. If the variable is normally distributed, what is the probability that a randomly selected town will have a homicide rate greater than 8?
- Consider the following set of three distributions, all of which are drawn to the same scale. Identify the two distributions that are normal. Of the two normal distributions, which one has the larger variation? Q 9 The two normal distributions are Ar 1. ^. where Ar 1) and (2) and (c) P) and (4) has the larger standard deviation.ABC has compiled data on the Time spent by the Bachelor students to watch videos on TikTok. They confirm that the time spent of Bachelor Population (BP) of 1200 students follows a normal distribution with the standard deviation equal to15 minutes. XYZ choose from the population (BP) a random sample of 140 students, and he confirms that : - 60% from the sample (BS) have account to watch videos on TikTok - the average time spent to watch videos on TikTok equals 75 minutes Determine at 95% confidence level, the population (BP) proportion that have a TikTok accountA dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1.25 years. The lifetime of a dishwasher is normally distributed. Suppose you are a manufacturer and you take a sample of 15 dishwashers that you made. Find probability that the sample mean lifetime of the 15 randomly selected dishwashers is less than 12.6 (4 decimals) find the probability that the sample mean lifetime of the 15 randomly selected dishwashers is less than 11.4 years thank u for the help