Assume that a sample is used to estimate a population proportion μμ. Find the margin of error M.E. that corresponds to a sample of size 336 with a mean of 78.3 and a standard deviation of 19.4 at a confidence level of 98%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. =

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A: Given Information -  Population Standard deviation (σ) = 8 Margin of error (E) = 2 Confidence level…

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A: (a) According to the empirical rule, approximately 68% of the observations fall within 1 standard…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 263.9…

A: a) The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the…

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A: Given : mean, u = 255.3 standard deviation , σ = 61.2

Q: 3. A random sample of 130 human body temperatures had a mean of 98.25 degrees and a standard…

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A: From the provided information, Sample size (n1) = 20 and n2 = 19

Q: How large the sample should be taken to estimate the average medical expense of the HHs in the city…

A: Solution: Given information: Margin of Error = E = 50 Population standard deviation = σ= 120 Assumed…

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Q: A sample of 62 eggs yields a mean weight of 1.25 ounces. Assume that population standard deviation…

A: Givensample size(n)=62standard deviation(σ)=0.31Mean(x)=1.25confidence level=87%

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: Mean = 98.25 Standard deviation = 0.66

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Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: Empirical rule :  According to empirical rule ,  68% of data falls within the first standard…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A:

Q: В. It is known that the expense in computer equipment for firms having less than 250 employees is a…

A: Disclaimer: As the question contains multiple subparts, only first three will be answered. We have a…

Q: Assume that X is normally distributed with unknown mean μ and standard deviation equals. 0.15. Given…

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Q: A sample of 15 males has a sample mean of 7.3 hours and the population standard deviation is assumed…

A: From the provided information, The hypotheses can be constructed as: H0: µ1 = µ2 H1: µ1 < µ2…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: For bell shaped distribution, the empirical rule states that around 68% of the observations lies…

Q: The pulse rates of 146 randomly selected adult males vary from a low of 39 bpm to a high of 119 bpm.…

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Q: A researcher claims that the mean sodium content of sandwiches at Restaurant A is less than the mean…

A: n1 = 22n2 = 28   x1 =670x2 = 690 s1 = 20s2 = 30

Q: Assume that a sample is used to estimate a population mean μμ. Find the margin of error that…

A: Solution: Given information: n= 13 Sample size  x= 54.9  Sample mean s= 16.6 Sample standard…

Q: Assuming the population has an approximate normal distribution, if a sample size n=25n=25 has a…

A: Given: population has normal distribution sample size n=25 sample mean x¯=37 sample standard…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: Chebyshev's theorem and empirical rule are used to calculate the percentages of data lies within…

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Q: The body temperatures of a group of healthy adults have a​ bell-shaped distribution with a mean of…

A: a. Empirical rule: The probability that the observation under the normal curve lies within 1…

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A: From the provided information, the sample size (n) = 80As the confidence interval is nor provided.…

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A: Given: standard deviation, s=10standard error =3

Q: peratures of a group of healthy adults have a​ bell-shaped distribution with a mean of 98.11°F and a…

A: Given: μ= 98.11, σ = 0.54   (a)   According to the empirical rule, approximately 68% of the…

Q: The body temperatures of a group of healthy adults have a​ bell-shaped distribution with a mean of…

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Q: Assuming the population has an approximate normal distribution, if a sample size n=13n=13 has a…

A: Here we need to find the Margin of error from the given information. Given sample mean=45 and sample…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: Solution: Let X be the body temperature of a healthy adult. From the given information, X follows…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

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Q: The sample consisted of 30 night students, with a sample mean GPA of 2.67 and a standard deviation…

A: Let night students be denoted by x1 and day students x2 Given,…

Q: 2. The weight of bolts produced by a machine has standard deviation of 0.03 pounds. Assuming that…

A: Margin of error=e=0.005 , standard deviations σ=0.03

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 254.4…

A:

Q: The body temperatures of a group of healthy adults have a​ bell-shaped distribution with a mean of…

A: Given that  Mean = M = 98.16 Standard deviation = SD = 0.65 X ~ Normal ( M = 98.16 , SD = 0.65 )

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

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

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 245.6…

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Q: Assuming the population has an approximate normal distribution, if a sample size n=17n=17 has a…

A: We have to answer Margin of error ..for given data..

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 264.7…

A: a) Obtain the approximate percentage of women with platelet counts within 2 standard deviations of…

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Q: A machine that produces ball bearings has initially been set so that the true average diameter of…

A: Let X be the random variable representing the diameter of a ball bearing True average diameter of…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: Given information: μ=98.39σ=0.56 Empirical Rule: 68% of values lies between one standard…

Q: The body temperatures of a group of healthy adults have a​ bell-shaped distribution with a mean of…

A: (a) Empirical rule: About 68% of all possible observations lie within one standard deviation from…

Q: The pulse rates of 161 randomly selected adult males vary from a low of 37 bpm to a high of 117 bpm.…

A: It is given that the sample size is 161. The adult males vary from a low of 37 bpm to a high of 117…

Q: A geomorphological survey wishes to estimate the average depth of creek beds emptying into the north…

A: Given that  Margin of error =E =25 Population standard deviation =100 90% confidence.  NOTE:-…

Q: The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of…

A: