Assume that a certain data is approximately bell-shaped with mean 91 and standard deviation 6. Use the Empirical Rule to find the percent of the data between 85 and 103. Show all the necessary calculations.

Q: The heights of women aged 20- 29 in the United States are approximately Normal with mean 64.2 inches…

A: The heights of women are approximately normal with a mean of 64.2 inches and a standard deviation of…

Q: The weights of adult California Condors average 14.8lbs with a standard deviation of 3.25lbs.…

A:

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A:

Q: Assume that the number of pieces per bag has a mean of 264 with a standard deviation of 3. use the…

A: Given :  the number of pieces per bag has a mean of , μ=264  a standard deviation of , σ =3   We…

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Given that Mean = 6.9 and Standard deviation = 1.5 Formula z = (x - mean)/ SD

Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

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Q: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: What will be the interpretation if correlation (r) has a value of -.5439? At what percent does the…

A: Correlation coefficient "r" measures linear relationship between between two variables. It lies…

Q: If the main level of snowfall for Boston Massachusetts is 44 inches per year and the standard…

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Q: 31.The National Center for Health Statistics reports that the mean systolic blood pressure for males…

A: As the population standard deviation is not known, we will use the z test. As it is required to test…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: Solution: State the hypotheses. Null hypothesis: H0: µ=69 Alternative hypothesis: H1: µ≠69

Q: In a recent survey of 655 working Americans ages −2534 , the average weekly amount spent on lunch…

A: We have given that,  X be the random variable from normal distribution with mean or average (μ) =…

Q: A businessman calculated the average price of variety A rice per kilo at ₱32.00 with a standard…

A: First calculate sample mean and sample standard deviation for rice B varieties using Excel

Q: Suppose the SAT scores follow a normal distribution with mean 1100 and standard deviation 200. Use…

A: According to 68-95-99.7 rule, 68% of the data values lies within one-standard deviation from the…

Q: we assume the average number of teeth lost in the 5−9 group is 7 teeth and the average number of…

A: Here we want to know best estimate of average number of teeth lost and it's standard deviation per…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: It is given that the claim is "The mean pulse rate​ (in beats per​ minute) of adult males is equal…

Q: according to the US census bureau,the mean of the commute time to work for a resdient of…

A: It is an important part of statistics. It is widely used.

Q: The mean SAT verbal score is 473, with a standard deviation of 96. Use the Empirical Rule to…

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Q: If the population standard deviation is unknown, what test statistic is to be used? a. t-test b.…

A: If the population standard deviation sigma  is known then z statistic is used.

Q: i want to estimate the mean number of minutes that a 7 year old watches TV daily. How many kids…

A: Given data,σ=45E=15z-value at 99% confidence is Zc=2.576n=?

Q: The mean gas mileage for cars driven by the students at Chillville High School is 28.0 miles per…

A:

Q: 4. Assume that the test scores from a college admission test are normally distributed with a mean of…

A: Given  μ= Mean of test score from a college admission test = 450 σ= Standard deviation of test score…

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69   bpm. For a…

A: GivenThe mean pulse rate in claim = 69 beats per minuteThe sample size = 129standard deviation =…

Q: Johnny and Billy are two third grade boys. Johnny scored 38 on a stan- dardized reading test with…

A: For Johnny , score = x1 = 38 Mean = 40 standard deviation = 7.5 The Z value is calculated as :…

Q: A distribution has standard deviation of 41.9 and mean of 74. What is the coefficient of variation?

A: Given standard deviation=41.9 mean=74

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A:

Q: The standard deviation on a final examination was 9, while the mean grade was 72. The best 14% of…

A: GivenMean(μ)=72standard deviation(σ)=9

Q: The mean height of a population of men is 70.8 inches and the standard deviation is 3.2 inches. What…

A:

Q: What is the standard deviation of a ribution that has a mean of 46.2 if a FORMANCE value of 28 is…

A: Given information: The mean of the distribution is µ = 46.2 The performance value is x = 28. The…

Q: The board of examiners that administers the real estate brokerʹs examination in a certain state…

A: According to the provided information, Mean = 494 Standard deviation = 72

Q: ​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A:

Q: According to the imperical rules rule , if there are 500 observations in a mound shaped data set the…

A: the empirical rule predicts that 68% of observations falls within the first standard deviation (µ ±…

Q: The mean number of travel days per year for salespeople employed by three hardware distributors…

A:

Q: Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard…

A:

Q: Assuming that the heights of college women are normally distributed with mean 65 inches and standard…

A: The normal distribution is the most useful theoretical distribution for continuous variable. For the…

Q: Suppose that the annual household income in a small Midwestern community is normally distributed…

A: Solution: Let X be the annual household income in a small Midwestern community is normally…

Q: It is determined that the amount of water in a bottle made by this company is normally distributed…

A: Given that, Mean = 12 Standard deviation = 0.06

Q: 6) A music industry professional claims that the average amount of money that an average teenager…

A: Given that  Hypothesized Population Mean (\mu)(μ) = 5050 Population Standard Deviation…

Q: Assume that the number of pieces per bag has a mean of 78 with a standard deviation of 1. use the…

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Q: If the mean is 8.35, and the standard deviation is 2.5, what will be the answer to this? How many…

A:

Q: What is the best approximation of the standard deviation ofthe measures -4, -3.0, 8, and 9?

A: Solution: Let X be the measure. The given data is –4, –3, 8 and 9.

Q: There are 500 employees in Company ABC of which the mean salary per day is Php385.00 with a standard…

A: Given: The number of employees are N=500. The mean salary per day of employees is μ=385. The…

Q: A demographics researcher claims that the mean household income in a recent year is the same in Ada…

A: Given: α = 0.10 n1 = 18 X1 = 58300 s1 = 9000 n2 = 20 X2 = 56600 s2 = 15600 Formula Used: t-test…

Q: According to a website, the mean number of apps on a smartphone in the United States is 85.  Assume…

A:

Q: The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons and…

A: Mean = 18 Standard deviation = 4

Q: normal distribution of adult males in North America (mean=70.0 inches, standard deviation=4.0…

A: (a) given μ=70.0, σ=4.0 The corresponding z-value needed to be computed: The proportion of those…

Q: USA Today reports that the average expenditure on Valentine's Day was expected to be $100.89. Do…

A: Given data : Given Data : For male x̄1 = 136.64 n1 = 44 σ1= 35 For…

Q: ording to a website, the mean number of apps on a smartphone in the United States is 85. Assume the…

A: Given data,Mean μ=85sd     σ=23Find the 55th percentile of the number of apps

Q: Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random…

A: Suppose, X be the pulse rate​ (in beats per​ minute) of adult males. and X follows Normal…