A population of values has a normal distribution with u = 64.5 ando random sample of size n = 48.2. You intend to draw a 47. Find the probability that a sample of size n = 47 is randomly selected with a mean between 42 and 66.6. P(42 < M < 66.6) = Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A: Chebyshev’s inequality:Chebyshev’s rule is appropriate for any distribution. That is, Chebyshev’s…

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A: Chebyschev's Inequality  is used to find the probability of range of a random variable , when mean…

Q: A simple random sample of 50 items resulted in a sample mean of 25.1. The population standard…

A: Formula : Margin of error: ME=Zα/2 * σ/√n

Q: the tensil strength of spot welds produced by a robot welder is approximately normally distributed,…

A: Given that, μ=10000,σ=800,n=40 The probability that the sample mean will be at least 10,200 pounds…

Q: To test Ho: o= 2.1 versus H, :0> 2.1, a random sample of size n = 25 is obtained from a population…

A: Given that Sample size n = 25 Sample SD = 2.3 Level of significance = 0.10

Q: A random sample of size 24 from a normal distribution has standard deviation s=66. Test H0:σ=36…

A: Given Information: Sample size (n) = 24 Standard deviation (s) = 66 Significance level α=0.10   Null…

Q: In a previous study conducted several years ago, a man owned on average 14 dress shirts. The…

A: Solution: Given information: n= 45 Sample size  x= 13.8 Sample mean μ=14 Population mean σ= 3…

Q: A sample of difference scores from a repeated-measures experiment has a mean of MD=3 with a standard…

A: The difference in score is measured so the null hypothesis will claim that the there is no…

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A: Empirical rule states for a bell shaped distribution with mean μ and standard deviation σ 68% of…

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

A: option 1 is the best suitable option...

Q: To test H0: σ=1.4 versus H1: σ≠1.4​, a random sample of size n=21 is obtained from a population that…

A: (a) The sample size is 21, sample standard deviation is 2.3, and population standard deviation 1.4.…

Q: A random sample is selected from a normal population with a mean of  = 30 and a standard deviation…

A: a. Null hypothesis: µ=30. Alternative hypothesis: µ≠30. Here, the sample mean, M is 33. Population…

Q: The Level of nítrogen oxides (NOX) in the exhaust of cars of a particular model is normally…

A: Given, The level of nitrogen oxide in the exhaust of cars of a particular model is normally…

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: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A: μ = 98.28σ = 0.61

Q: The operator of a pumping station has observed that demand for water during early evening ours has…

A: The demand for water during early evening hours is exponentially distributed with mean 100 cfs

Q: A Gaussian random voltage X with zero mean and standard deviation of 4.5 volts appears across 100…

A: Here, X is normally distributed with mean(μ) of 0 volts and standard deviation(σ) of 4.5 volts.

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A: Given datamean=98.21oFstandard deviation=0.57oF

Q: A fast food outlet claims that the mean waiting time in line is less than 3.4 minutes. A random…

A: Hypothesis, Ho: the mean waiting time in line is less than 3.4 minutes. (mu&lt;3.4) H1: the mean…

Q: A random sample is selected from a normal population with a mean of μ=50 and a standard deviation of…

A: 1) To determine if the sample mean is sufficient to conclude that the treatment has significant…

Q: Today, the waves are crashing onto the beach every 5.8 seconds. The times from when a person arrives…

A: From the given information, the random variable X as he times from when a person arrives at the…

Q: A simple random sample from a population with a normal distribution of 97 body temperatures has…

A:

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A:

Q: A random sample of n = 16 scores is obtained from a normal population with a mean of µ = 100 and a…

A:

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: 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 random sample taken at 12​ A.M., body temperatures of healthy adults have a​…

A:

Q: A sample of size 10 has a mean of 87 and a standard deviation of 8.5 is to be used to test the null…

A:

Q: The flexural strengths of a random sample of 10 concrete beams were measured at 24 hours from one…

A:

Q: A sociologist wishes to see whether for a certain group of professional women, the average age at…

A: Given,   Sample size = 25 Sample mean = 29.7 Population standard deviation = 1.1   Under the claim,…

Q: A normal distribution has a mean of 50 and a standard deviation of 4. a. Compute the probability…

A:

Q: At least% of healthy adults have body temperatures within 3 standard deviations of 98.12°F. (Round…

A: Let,  X: be the body temperature of healthy adults. Given, X ~ N(μ, σ2)μ=98.12σ=0.65 μ=mean σ=sd=…

Q: the distribution of certain test scores  is a nonstandard normal distribution with a mean of 80 and…

A: Given:Population mean (μ) = 80Population standard deviation (σ) = 3

Q: If the random variable X is distributed .4 through the Normal distribution with mean = and variance…

A:

Q: A given distribution has a population mean, μ, of 108 and a population standard deviation, σ, of 15.…

A:

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

A: Plug in all the values in the formula, we get

Q: A random sample is selected from a normal population with a mean of μ = 30 and a standard deviation…

A: State the hypotheses That is, there is no sufficient evidence to conclude that treatment has a…

Q: A manufacturer has developed a new fishing line, which the company claims has a mean breaking…

A: Given: μ=15, σ=0.5The critical region is defined as X&lt;14.9. a) α=Ptype I=Preject H0|H0 is…

Q: a random sample of n = 36 students who registered for Introductory Psychology is placed in the…

A: Given,       sample size, n=36      sample mean score, M=76      mean score of general population of…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 260.2…

A: Given, the blood platelet counts of group of women have a bell-shaped distribution with a mean of…

Q: A sample of size 8 has a mean of 71 and a standard deviation of 8.5 is to be used to test the null…

A: Given that sample size n = 8 Sample mean = 71 Population SD = 5 Sample SD = 8.5

Q: The price (in SEK) for a certain share is described by a lognormally distributed random variable…

A:

Q: Past experience indicates that the time for high school seniors to complete a standardized test is a…

A: Sample size is n = 20 Sample mean = 33.1 And sample SD = 4.3 Level of significance = 0.01

Q: A mixture of pulverized fuel ash and Portland cement to be used for grouting should have a…

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Q: A random sample of 115 observations produced a sample mean of 29. Find the critical and observed…

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Q: The actual weight of a bag of flour is modeled as a normal random variable with a mean of 0.25…

A: Sampling Distribution of Normal Variable X : Given a random variable X. Suppose that the…

Q: a) A machine is set to produce disc plates with a mean diameter of 14 mm. A sample of 8 discs gave a…

A: Givensample size(n)=8Mean(x¯)=14.9standard deviation(s)-1.33level of significance(α)=5%

Q: According to a random sample taken at 12 A.M., body temperatures of healthy adults have a…

A: Obtain the minimum and maximum possible body temperatures that are within 3 standard deviations of…

Q: The capacitances of certain electronic components have a normal distribution with a mean p = 175 and…

A:

Q: Today, the waves are crashing onto the beach every 5.8 seconds. The times from when a person arrives…

A: The probability density function (PDF) of the uniformly distributed random variable with parameters…