Q2: Serum amylase determinations were made on a sample of 15 apparently healthy subjects in the Electricity Power Plant of Nasriya January 2010. The sample yielded a mean of 96 and a standard deviation of 35 units/100ml. Estimate the true mean of serum amylase in the healthy population of Nasriya.

Q: In a vending machine the capacity of cups is normally distributed, with mean 200 cm³ and standard…

A: Given Data: let X be the variable for capacity of cups let Y be the variable for coffee discharged…

Q: On a standardized test, scores are normally distributed with a mean of 400 and a standard deviation…

A: Given data,μ=400σ=80P(X<x)=80%=0.80x=?

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A: μ  = 506 , σ = 100  Z~ N(0,1)

Q: Assume that the time the student stays in school is normally distrībuted with a mean of 5 hours and…

A:

Q: In the​ wild, monkeys eat an average of 24 bananas a day with a standard deviation of 3 bananas. One…

A: The mean is 24 bananas a day with a standard deviation of 3 bananas. One monkey eats only 17…

Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

A:

Q: The amount spent on textbooks for the fall term was recorded for a sample of five hundred university…

A: GivenMean(μ)=500standard deviation(σ)=100student textbook expenditure (x)=700

Q: the filling variance for boxes of cereal is designed to be .02 or less. a sample of 41 boxesof…

A:

Q: Scores on a certain standarized test have a mean of 500, and a standard deviation of 50. How common…

A: Given, Mean = μ =500SD = σ = 50

Q: At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of…

A: Given problem Given that   At a local high school, GPA's are normally distributed with a mean of…

Q: If the dispersion is small the, the standard deviation is........?

A:

Q: Q4. The standard deviation of the temperature in a large refridgeratored room should not exceed…

A:

Q: A marine biologist claims that the mean length of mature female pink seaperch is different in fall…

A: Given: Fall Sample size (n1) = 12 Sample mean x¯1=123 Sample standard deviation (s1) = 14 Winter…

Q: A z-score of −1 tells us that a score fell one standard deviation below the mean in a group of…

A: Empirical rule: For a normal distribution, the approximate values that fall in the specified…

Q: The contents of 40 cans of Coke have a mean of 12.15 fl oz and a standard deviation of 0.09 fl oz.…

A: Given, mean, x= 12.15 fl oz  standard deviation, σ = 0.09 fl oz population mean, μ = 12 fl oz X ~…

Q: Can you find the mean and the standard deviation with this data?

A: Given: Data on Index finger length for female. Step-by-step procedure to obtain the mean and the…

Q: At my work there is a fancy coffee machine that dispenses 120 ml of coffee, but I believe that the…

A: Given data and calculation for sample standard deviation is shown below Hypothesized mean = 120 ml…

Q: The daily income of bank auditors in SSS Commercial Bank is normally distributed with a mean of P675…

A: Given

Q: A radio station claims that the amount of advertising each hour has a mean of 16 minutes and a…

A:

Q: Do men take less time than women to get out of bed in the morning? The 57 men observed averaged 4.7…

A:

Q: A sample of 100 tyres is taken from a lot. The mean life of tyres is found to be 39, 350 kilo meters…

A: Solution-: By using R-Software: #Given :xb=39350,mu0=40000,n=100,sdx=3260#To test the hypothesis as…

Q: A sample of 50 lenses used in eyeglasses yields a sample mean thickness of 3.05 mm and a sample…

A: Denote μ as the true average thickness of lenses.

Q: A light bulb manufacture guarantees that that the mean life of a certain type of light bulb is at…

A:

Q: kes of cereal shows a sample standard deviation of .16 ounces. x = .05, the population variance…

A: Given that,  Hypothesized population variance =σ2=0.02 Sample size =n=41 Sample standard…

Q: The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a…

A: GivenMean(μ)=3000standard deviation(σ)=500

Q: The mean BMI score for dieters on the Jenny Craig weight loss program is 38.5, and the standard…

A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

A:

Q: Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a…

A: Given: Meanμ=1500Standard deviationσ=250

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A:

Q: The fuel efficiency of cars currently registered in the Commonwealth of Virginia is normally…

A: X follows a Normal distribution with mean = 24 and S.D = 6 Then z=(x-mean)/SD = (x-24)/6  follows…

Q: Q2: The mean systolic blood pressure, measured in Nasriya City, of 130 men aged between 50-65 years,…

A: Given: n=130x¯=145.5s=2μ=150α=0.05 The test hypothesis are, H0: μ = 150 H1: μ ≠ 150 This is a…

Q: A bank loan officer rates applicants for credit. The ratings can be described by a normal model with…

A: Given: μ = ​200 σ = 50

Q: The mean temperature in Islamabad in the month of January is 16▫c with a standard deviation of…

A:

Q: An automatic coffee machine dispenses cups of coffee whose volume per cup varies normally with the…

A: Answer :

Q: The distribution of average hours of sleep per weeknight among college students is found to be…

A: Given Mean=6.5 Standard deviations=1.2

Q: The amount of Derek's monthly phone bill is normally distributed with a mean of $74 and a standard…

A: By Empirical Rule: 68% of the values lie between 1 standard deviation of the mean, thus:…

Q: Are low-fat diets or low-carb diets more effective for weight loss?  A sample of 77 subjects went on…

A: From the provided information, The hypotheses can be constructed as: H0: µ1 - µ2 ≤ 0 H1: µ1 - µ2…

Q: reasonably regarded as a a sample from a standard deviation

A: Given: In a sample of 400 male students, it was observed that they have a mean height (of 55+18)…

Q: A grade of 81 in a test in which the mean is 75 and the standard deviation is 12 corresponds to a…

A:

Q: The daily income of bank auditors in SSS Commercial Bank is normally distributed with a mean of P675…

A: Solution: Let x be the daily income of bank auditors in SSS Commercial Bank is normally distributed…

Q: The income of trainess at a local mill are normally distributed with a mean of $1100 and a standard…

A: Let Y be the income of trainee mean = μ = $1100 standard deviation = σ = $150

Q: The mean IQ score of adults is 100, with a standard deviation of 15. Use the Empirical Rule to find…

A: According to the given information in this question We need to apply empirical rule

Q: The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1800…

A: X is normally distributed.  Mean = 1800 hours Sigma = 25 hours  X represents the amount of  time a…

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: In a county male height is normally distributed with a mean of 177 cm and a standard deviation of 6…

A:

Q: A company responsible for making gumballs found that their gumballs had an average diameter of 2.21…

A: The given graph is the normalised distribution where mid line is the mean.  First left and right…

Q: On a recent quiz, the class mean was 78 with a standard deviation of 4.1. Calculate the z-score (to…

A: Given :  Mean = μ =78 Standard Deviation = σ = 4.1 z-score for a person who received score 91 = ?…

Q: On a recent quiz, the class mean was 74 with a standard deviation of 2.8. Calculate the z-score (to…

A:

Q: In a certain company, every worker received a $50-per-week raise. How does this affect the mean…

A: In a certain company, every worker received a $50-per-week raise. The mean salary is the average of…