Using the ungrouped find the following | Quartile deviation, Average deviation, Standard deviation. 22, 19, 18,17, 16, 15, 14, 13, 12, 10.
Q: Joan’s finishing time for the Bolder Boulder 10K race was 1.82 standard deviations faster than the…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: The manager of a grocery store has taken a random sample of 36 customers. The average length of time…
A: It is given that Sample size n = 36 Sample mean = 4.2 Population SD = 0.4
Q: Joan’s finishing time for the Bolder Boulder 10K race was 1.76 standard deviations faster than the…
A: Given x=μ+1.76 σ ∴z=1.76 ∵1.76 SD above mean n=420 women
Q: The heart rate of 20 patients in the ICU have a mean of 95.3 beats per minute and a standard…
A: We have given that Sample size (n) = 20Sample mean (x̅) = 95.3Standard deviations (s) = 19.6 Mean(µ)…
Q: Without actually doing the calculations, decide which, if either, of the following two sets of data…
A: The given data is: Without actually doing any calculation, decide which, if either, of the following…
Q: Suppose that the distribution of touchdowns (in football) is normally distributed with a mean of 250…
A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…
Q: Mrs. Smith's reading class can read a mean of 175 words per minute with a standard deviation of 20…
A: Let the random variable x denotes the number of words read per minutes. Given that Mrs. Smith's…
Q: Blood glucose levels for overweight tweens, adolescents between the age 9-12, have a mean of 100…
A: A hypothesis test can be conducted to test whether the population mean is equal to the claimed value…
Q: What is the standard deviation of 32, 21, 17, 38 and 6.
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Q: there are 300,000 people review for the movie pupulation mean is 7.2 stars and standard deviation…
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Q: The fuel efficiency , in miles per gallon of 10 small utility trucks was measured. The results are…
A: Here n= 14 not 10
Q: A drug for treating acne possibly has a side effect of decreasing patients’ sense of self-worth. To…
A: When the given sample is 30 or more than 30 we say that it is a large sample test. When the given…
Q: Scores for a civil service exam are normally distributed, with a standard deviation of 8. To be…
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Q: Which of the below data sets has the lowest standard deviation? You do not need to calculate the…
A: The correct option is 0, 1, 3, 3, 3, 5, 6
Q: The Wall Street Journal reported that automobile crashes cost the United States $162 billion…
A: formula for the sample size
Q: A mandatory competency test for high school sophomores has a normal distribution with a mean of 400…
A:
Q: Nationally the average score on the college entrance exams (Verbal test) is 453 with a standard…
A: Consider that μ is the population mean score. Null hypothesis: H0: μ = 453. Alternative hypothesis:…
Q: How high must a 2016 Vehicles gas mileage be to fall in the top 15% of all vehicles? normal mean is…
A: Given information: normal mean is 23.0mpg standard deviation is 4.9mpg
Q: A pharmaceutical company claims that the employees' salary average = 1047 dollars. We want to test…
A: The claim is that Employees average salary . µ = 1047 Number of samples collected, n = 49 Sample…
Q: The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25.…
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Q: To qualify for a police academy, candidates must score in the top 10% on a general abilities test.…
A: Given that X~N(μ= 200 , σ= 20 ) μ= 200 , σ= 20 Formula for Z-score Z=(X-μ)/σ
Q: Which among have the least variability when measured by the standard deviation? Hint: No…
A: Measure of central tendency measures the central or average value of a dataset. Measured of…
Q: A highly anticipated sci-fi movie opened up in theaters with a special midnight showing this past…
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Q: standardized test statistic? What is the P Value?
A: Claim- tuna consumption by a person is 3.2 pounds per year. sample size(n) = 60 Mean tuna…
Q: The amount dispensed by a cola machine follows the normal distribution with a mean of 7 ounces and a…
A: Given, μ = 7σ = 0.10p = 0.01 To find value of x?
Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…
A: Solution-: Given: μ=40, σ=11 We want to find the proportion of customers who use ATMs less than…
Q: Nationwide, the average salary of actuaries who achieve the rank of fellow is $ 151,000.An insurance…
A: Solution: Let X be the salary of a fellow. From the given information, x-bar = 156,000, S=10,000 and…
Q: The Department of Early Learning sets rules for childcare in Washington State. They are interested…
A: Solution: From the given information, confidence level is 0.95, σ=$1.40 and E=$0.50.
Q: 29. Hospital Emergency Waiting Times The mean of the waiting times in an emergency room is 80.2…
A: Measures of variability:The measure of variability or the measures of dispersion can be measured…
Q: After taking the final exam, it appears that Tim is part of the 85th percentile in terms of ranking.…
A: GivenMean(μ)=60standard deviation(σ)=3.2
Q: The port of South Louisiana, located along the Mississippi River between New Orleans and Baton…
A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…
Q: A radio station claims that the amount of advertising each hour has a mean of 17 minutes and a…
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Q: The annual per capita consumption of oranges (in pounds) in the United States can be approximated by…
A: Note :“Since you have asked multiple question, we will solve the first question for you. If youwant…
Q: A machine used to fill gallon-sized paint cans is regulated so that the amount of paint dispensed…
A: Given information Mean (µ) = 128 Ounces Standard deviation (σ) = 0.20 ounces If 40 cans is randomly…
Q: Most medical schools require applicants for admission to take the Medical College Admissions Test…
A: It is given that mean and standard deviation are 500 and 10.6, respectively.
Q: Male elk living in the wild have a mean weight of 720 pounds with a standard deviation of 32 pounds.…
A: It is given that the mean and standard deviation of female elk weight are 515 and 20, respectively.
Q: Kathy and her brother Clay recently ran in a local marathon. The distribution of finishing timefor…
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Q: Hospital Emergency Waiting Times The mean of the waiting times in an emergency room is 80.2 minutes…
A: Standard deviations tells about the variation in the data. Higher the standard deviation, higher is…
Q: The monthly income of 5,000 workers at the Microsoft development plant are distributed normally. The…
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Q: Heavy children: Are children heavier now than they were in the past? The National Health and…
A: For the given data Write the hypotheses
Q: . The salaries of pharmacy techs are normally distributed with a mean of $33,000 and a standard…
A: We have given that. X~N( μ , ?^2 ) μ = 33000, ? =4000 Z-score =( x - μ )/?
Q: The mean and standard deviation of a population are 300 and 75, respectively. Sample size is 49.…
A: Given Data Population Mean,μ = 300.0 Population Standard Deviation,σ = 75.0 sample…
Q: The College of Knowledge gives an admission qualifying exam. The results are normally distributed…
A: Here results are normally distributed. We have : = 500, = 100 65th percentile will given as: P(Z…
Q: According to the U.S Census Bureau the mean of the commute time to work for a resident of Los…
A: Given Information: Mean μ=27.3 Standard deviation σ=8.1 Assume that the commute time to work for a…
Q: what is the minimum pregnancy length that can be in the top 8% of pregnancy given a mean of 265 and…
A: Given, Pregnancy length having mean 265 and standard deviation 12. Here, We assume, the pregnancy…
Q: The average math SAT score is 523 with a standard deviation of 118 A particular high school claims…
A: Given that The average math SAT score is 523 with a standard deviation of 118. Mean (μ) = 523…
Q: A bottled water distributor wants to determine whether the mean amount of water contained in…
A: Given information: x¯=0.992σ=0.02μ=1n=50
Q: Two students take qualifying exams. Student A got a score of 144 with a mean of 128 and a standard…
A:
Q: The number of reviews for each of the local bowling alleys are counted. The results are normally…
A: Here is given that mean is 25 and standard deviation is 4. We will use z-standard normal…
Q: A pupil in grade 2 jumped 3.2 m for the long jump. The class mean is 2.5 m with a standard deviation…
A: A pupil in grade 2 jumped 3.2 m for the long jump. The class mean is 2.5 m with a standard deviation…
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