- 0. UBU 18. If the mean is 225 and the standard deviation is 28 for a normally distributed variable, what is the x vc that corresponds to a z = -0.93? 22| (sz2-リ-

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

A:

Q: Suppose that a grocery store buys milk for $2.10 and sells it for $2.60. If the milk gets old then…

A: Given dataa grocery store buys milk for $2.10 and sells at $2.60And given mean is 2700 and standard…

Q: 37. Which of the following formulas is used to calculate the population standard deviation? (х — и)2…

A: In this question the sample values are given, Xi: 51,89,129,215,297. And given the given data…

Q: Pandora, the owner of a food delivery app, knows from experience that the time needed to assemble a…

A:

Q: An auditor finds that the values of a corporation’s accounts receivable have a mean of $295 and a…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: A population has a mean of u = 50 and a standard deviation of o = 10. a. If 3 points were added to…

A: A population has a mean of μ= 50 and a standard deviation of σ = 10.

Q: Suppose the mean and standard deviation of the GPAs at Loyola are  Xbar = 2.951; and s = 0.573…

A: Given, X_bar = 2.951 s = 0.573 z_score = -0.720

Q: The scores of the students are normally distributed with a mean of 83 and a standard deviation of…

A:

Q: For an exam with a mean of M = 74 and a standard deviation of s = 8, Mary has a score of X = 80,…

A: Concept: A z-score is known as the standard score that determines how much the data point deviates…

Q: It is reported that the average American eats out at a restaurant 5.9 times per week. A random…

A: We have given that,  Population mean (u) = 5.9, population standard deviation (o) = 1.7, sample size…

Q: The heights(in inches) of males in the U.S. are believed to be normally distributed with mean. The…

A: Given: Standard deviation (s) = 4.15 Sample size (n) = 25

Q: 23. Make a conjecture about the relationship between og, ox, and N, where az is the standard…

A:

Q: A given distribution has a population mean, μ, of 107 and a population standard deviation, σ, of 12.…

A: Given information: μ=107 σ=12.  x=99

Q: has the value t = 2.24. If the standard deviation from the sample is 2.4, what is the mea %3D O 16 O…

A: The formula for test statistic is,

Q: Suppose the scores on an exam have a mean of 60 with a standard deviation of 10. If one student has…

A: Given,mean(μ)=60standard deviation(σ)=10

Q: Suppose the mean and standard deviation of the GPAs at Loyola are  Xbar = 1.833; and s = 0.044…

A:

Q: 34. Assume that the readings at freezing on a batch of thermometers are normally distributed with a…

A: 34 Obtain the value of P48 such that temperature reading separating the bottom 48% from the top 52%.…

Q: Suppose that average male weight in the US is 175 pounds with a standard deviation of 25 pounds.…

A:

Q: The heights of students from a certain school are normally distributed with mean 106 cm and standard…

A: x=100.64

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A:

Q: 6.18 The heights of 1000 students are normally dis- tributed with a mean of 174.5 centimeters and a…

A: (a) (b)

Q: The heights cleared by two athletes in a high jump event are recorded bellowed. Athlete X: 1.86 m,…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: From a sample with n=36 the mean duration of a geyser eruption is 3.99 minutes and the the standard…

A: Solution: Let X be the duration of a geyser eruption. From the given information, n=36, µ = 3.99…

Q: 1) Suppose that 1,000 students took a Math examination wherein the maximum score that they can…

A: We assume that the score of the 1000 students is normally distributed with mean 70 and standard…

Q: Suppose the scores on an exam have a mean of 70 with a standard deviation of 10. If one student has…

A:

Q: If X~N(100, σ 2 ) and P(X < 106) = 0.8849, find the standard deviation, σ.

A: Here,X~N(μ,σ2)so,Here X~N(100,σ2)   → 1

Q: 6.12 The average length of steel nails is 5 centime- ters, with a standard deviation of 0.05…

A: GivenMean(μ)=5 cmsstandard deviation(σ)=0.05 cms

Q: 6.21. For two observations 'a' and 'b', show that standard deviation is half the disto between them.

A:

Q: Suppose a 60-watt light bulb produced by a company has a mean life of 750 hours with a standard…

A: Let us assume the population mean and standard deviation for a distribution is μ and σ. Let a sample…

Q: 2. The heights of 1000 students are normally distributed with a mean of 174.5 cm. and a standard…

A:

Q: Suppose that the lengths of human pregnancies are normally distributed with a mean of 268 days and a…

A:

Q: A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of…

A: We have given that,  Hypothesized mean = 3.3 , Mean = 3.2 , SD = 1.06 , Sample size = 50 , At…

Q: Suppose that the average score on the GMAT exam is 500 and that standard deviation of all sources is…

A: the average score on the GMAT exam is 500  i.e,mean=500standard deviation of all sources is  = 100…

Q: If X is normally distributed and P(X26)=0.0228, find the mean and standard deviation of X. (Make it…

A:

Q: 4. In a test of Ho: u = 80 against Ha: u # 80, a sample of observations had a mean and standard %3D…

A:

Q: The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Using Chebyshev’s…

A: Here, The mean of fifty sales receipts is $65.75 and the standard deviation is $10.55. Chebyshev’s…

Q: Q.3 Assume that the heights of men are normally distributed with a standard deviation of 2.5 inches.…

A:

Q: Suppose that prices of a certain model of new homes are normally distributed with a mean of…

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

Q: Suppose the mean and standard deviation of the GPAs at school are  Xbar = 1.487; and s = 1.332…

A: Given: Let X be the random variable denoting the GPA of every student. and GPAs are normally…

Q: 11. Assume that the weights of individuals are independent and normally distributed with a mean of…

A: Given data Assume that the weights of individuals are independent  with mean of 160  and standard…

Q: If an observation has a z-score of -1.5, how many standard deviations is it above or below the mean?…

A: Standardized z-score:   The standardized z-score represents the number of standard deviations the…

Q: 12. The weights of the males lowland copperhead in Tasmania have a mean of 812.07 g and a standard…

A:

Q: Suppose the mean and standard deviation of the GPAs at Tulane are  Xbar = 2.899; and s = -0.753…

A: Given information, X¯=2.899s=0.753z=-0.140 Formula for z score: z=score-x¯s

Q: If X is normally distributed random variable with a standard deviation of 48. Find the mean given…

A:

Q: 1. A distribution of exam scores has a mean of µ = 78. a. If your score is X = 70, which standard…

A:

Q: A nutritionist claims that the mean tuna consumption by a person is 3.2 pounds per year. A sample of…

A:

Q: The average weight loss in following the ketogenic diet after 30 days of strict compliance is 6…

A:

Q: Suppose the scores on an exam havea mean of 70 with a standard deviation of 10. If one student has a…

A: Mean = 70 Std dev = 10

Q: Suppose that the weights of people who work in an office building are normally distributed with a…

A: From the provided information, Mean (µ) = 165 lb Standard deviation (σ) = 25 lb X~N (165, 25)

Q: There are frogs and koi in a pond, and the number of frogs and the number of koi in the pond are…

A: