Statistics Question

Q: in c nurmal disribution X= S and Z= -1.23 thờ tlis Yon that X-5 the mean Stardard devictens to The

A: It is given that X = 5 and z = -1.23.

Q: ] SIGMA: Given the following set of paired data values, determine the value of nΣ(xy)2.  [Enter a nu...

A: The values of x and y can be arranged in a table: x 2 1 3 4 3 y 4 7 9 1 8 xy 8 7 27 4 24 T...

Q: Construt a 90% confidence interval of the population proportion using the given information . ×=40, ...

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Q: A survey of 50 young professionals found that they spent an average of ​$24.15w hen dining​ out, wit...

A: Given information- Population mean, μ = $27 Sample size, n = 50 Significance level, α = 0.05 Sample ...

Q: Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or classe...

A: Given, out of randomly selected adults with smartphones, 52% use them in meetings or classes. So, X ...

Q: A certain group of women has a 0.06% rate of red/green color blindness. If a woman is randomly selec...

A: Concept: Compliments are the mutually exclusive pair of events. The complementation rule states that...

Q: If one student is chosen at random, Find the probability that the student was female AND got a "C".

A: Consider the given table. The number of females = 40 The number of females who received C = 9 Total ...

Q: You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based...

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Q: 6. 17 12 13 17 1) Calculate the mean. %3D 2) Fill in the table below: Fill in the differences of eac...

A: (1) The value of mean is, Hence, the required value of mean is, 13.

Q: The State Department of weights and measures is responsible for making sure that commercial weighing...

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Q: The Department of the Census provides the following data table.   single married widowed ...

A: From the provided information, The total of female = 0.52 a) The missing word for female row = 0.52 ...

Q: In a Gallup poll of 1040 randomly selected adults, 49% answered "yes" when asked "Do you have a gun ...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Find each of the requested values for a population with a mean of µ 40, and a standard deviation of ...

A: Given, μ=40σ=8 A. The required z-score corresponding to x=52 is obtained as- z=x-μσ=52-408=128=1.5 B...

Q: The table summarizes results from 988 pedestrian deaths that were caused by automobile accidents. Pe...

A: Driver Intoxicated? Pedestrian intoxicated?       Yes No Total Yes 42 82 124 No 280 584 864 ...

Q: Need Help for both questions!

A: The standard deviation for estimated population using the definitional formula: σ=1N∑i=1N(xi-μ)2 μ i...

Q: Statistics Question

A: Given :  Giving  a test to a group of students , the grades and gender is summarized in the above da...

Q: What are the three levels of measurement?

A: The three levels of measurement are nominal, ordinal, and interval-ratio variables. Nominal scale: S...

Q: 1. Although there is a popular belief that herbal remedies such as ginkgo biloba and ginseng may imp...

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Q: In follow up to my last test, I believe there are more females that use iPhones then males. In a stu...

A: Total sampled people are 20  Here, n1=10, n2=10  and p^1=0.5, p^2=0.7   The null hypothesis is    H0...

Q: 1. Given the following frequency distribution, compute for the following. Class Intervals freq...

A:   Hey, since there are multiple subparts posted, we will answer first three question. If you want an...

Q: A final exam in math 160 has a mean of 73 with a standard deviation of 7.73. Assume that a random sa...

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Q: Consider the following data set: 10, 13, 18, 16, 15, 12, 20. Round your answers to the nearest hundr...

A: Number of samples (n) = 7 X 10 13 18 16 15 12 20

Q: What is the variance and standard deviation for these numbers

A: The variance is used to calculate the variability of the data set. It tells us about the data that h...

Q: For a sample with a standard deviation of s = 8, a score of X = 65 corresponds to z =1.50. What is t...

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Q: 1. A class consists of 10 male students and 30 female students. If one student is randomly selected ...

A: 1. Given: Number of male students = 10, Number of female students = 30. The probability that the mal...

Q: Number 2

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Q: Find the t values that form the boundaries of the critical region for a two-tailed test and a one-ta...

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Q: 1. The most obese countries in the world have obesity rates that range from 11.4% to 74.6%. This dat...

A: The mean is the best estimate and it can be calculated using the formula x=∑i=1nfixi∑i=1nfi

Q: For a population with a standard deviation of o=20 find the z score for each of the following locati...

A: Solution Where,

Q: A magazine includes a report on the energy costs per year for​ 32-inch liquid crystal display​ (LCD)...

A: Let, 'n' is the sample size, ‘s’ is the sample standard deviation, ‘σ’ is the population standard de...

Q: what is the population variance of these numbers? 1,3,3,4,6,7

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Q: For a population with a mean of μ = 100 and a standard deviation of σ = 20,a. Find the z-score for e...

A: (a) Obtain the standard z-score for the random variable X equals 108. The standard z-score for the r...

Q: What's an example of Test-Retest Reliability? What's an example of Interrater Reliability?

A: Here is the explanation for this as follows; Test-retest Reliability: It measures the consistency of...

Q: Use the data in the following table, which lists drive-thru order accuracy at popular fast food chai...

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Q: During August 2019, I, along with 293,274 of my closest friends, entered a lottery drawing for entry...

A: Given, number of entry in lottery = 293275 number of participants in marathon = 35000 number of part...

Q: question is attached below, the last few questions i could not read the hand writting

A: Given, fXx=Ax4,x≥10,x<1 Therefore, ∫1∞fXxdx=1∫1∞Ax4dx=1A∫1∞1x4dx=1A×x-4+1-4+11∞=1A×x-3-31∞=1A×0+1...

Q: SAT scores are distributed with a mean of 1,500 and a standard deviation of 312. You are interested ...

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Q: If babies' weights are normally distributed with a mean of 3.23 kg and a standard deviation of 0.87 ...

A: Mean, µ = 3.23 and standard deviation, σ = 0.87.

Q: [2] TYPES OF STUDIES [Part 2]: Forty 60-65 year old males have agreed to participate in an eight-wee...

A: Given, Forty 60-65 year old males have agreed to participate in a eight-week study of the effectiven...

Q: question attached below

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Q: 7.14  Compas and others (1994) were surprised to find that young children under stress actually repo...

A: Given Information :  Compas and others (1994) were surprised to find that young children under stres...