When the population is not normally distributed, the sampling distribution of the mean approximates which of the following? A) A slight positive skew B)A normal distribution C)A normal distribution given a large enough sample D)A distribution that is not normal

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A: (a) Obtain the 95% percentage of the widget weights that lies between.   The 95% percentage of the…

Q: e standard deviation of a sampling distribution is referred to as its standard error.

A: Sampling distribution is the probability distribution of the statistic of the sample like sample…

Q: not a property of the normal distribution

A: Normal distributions have key characteristics that are easy to spot in graphs: The mean, median and…

Q: Areas of the proportion within the normal curve are: 1) either positive or negative  2) always…

A: In general, the probability value lies between 0 and 1.

Q: To avoid having her hours cut back at work, Bridgett must avoid performing in the lowest 40% of the…

A: Given, Amount of item manufactured at her job from a normal distribution with mean 100 and standard…

Q: Costs for standard veterinary services at a local animal hospital follow a Normal distribution with…

A: GIVEN DATA normal distributionμ = 89σ = 23P(45<x<132) = ?

Q: a) What are some of the distinguishing properties of a normal Distribution? Discuss b) The sampling…

A: • The answers to the above questions are as follows :-

Q: 2. Which of the following is NOT a property of the normal random distribution? A. The curve is…

A: (2) We have given that,  Which of the following is Not property of the Normal random distribution?…

Q: For a standard normal distribution: a) find the probability a score is between the mean and 1.78…

A: The mean and standard deviation of the standard normal distribution are 0 and 1.

Q: Which of the following is NOT information provided by the Unit Normal Table? A. The Proportion of…

A: The solution is shown in step-2

Q: a) 68% of the widget weights lie between and b) What percentage of the widget weights lie between…

A: The random variable X is defined as the widget weights. The mean is 47 ounces and standard deviation…

Q: In a normal distribution… In a normal distribution… A) A value that is far from the mean is more…

A: Normal distribution is bell shaped distribution  In normal distribution the all values near to mean…

Q: The average income in a certain region in 2013 was ​$67,000 per person per year. Suppose the…

A: Answer:- Given information,  Mean, μ = 67000  Standard deviation, σ = 31000  Sample size, n = 100…

Q: a. As the sample size increases, the standard error of the mean increases. O True O False b. Suppose…

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Q: Assuming a normal distribution, what is the z-score associated with the following a) 90th…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: a) 68% of the widget weights lie between  and         ? b) What percentage of the widget weights…

A: Empirical rule (68 – 95 – 99.7 rule): For a bell shaped distribution (normal) the empirical rule…

Q: A normal distribution is unimodal distribution. It means that a. Mean, Median and Mode are equal b.…

A:

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A: According to the empirical rule,

Q: There are many different ways to determine whether or not a data set has a normal distribution. O…

A: Find your answer below

Q: As sample size decreases, the sampling distribution of the mean:

A: Note that as the sample size increases, the standard deviation of the sample means decreases.

Q: According to the central limit theorem, the sampling distribution of the mean will more closely…

A: The central limit states X¯ ~Nμ,σ2n               approximtely This theorem states that if the…

Q: Which of these distributions would most flat and wide?  A. T-distribution for sample of size n=5…

A: We want to which of these distributions would most flat and wide

Q: In a normal distribution, approximately what percentage of the data falls within one standard…

A: Step 1: Define how to use the 68-95-99.7/Empirical RuleAccording to the 68-95-99.7/Empirical…

Q: Determine the probability or area for the portions of the normal distribution dese P(0 < Z<0.91) a)…

A: To find the probability or area for the proportions of the normal distribution  a) P(0&lt;Z&lt;0.91)…

Q: he largest value of a Normal distribution is attained at the: A. Extremes B. Mean…

A:

Q: Which accurately describes the shape of the sampling distribution? A) The sampling distribution…

A: According to central limit theorem, for large sample (&gt;30) or if the population follows normal…

Q: What happens to the sampling distribution of the mean when a population is already normally…

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Q: The standard deviation of a sampling distribution: A. applies only to population data B. is always…

A: The standard deviation of a sampling distribution

Q: The average income in a certain region in 2013 was $61,000 per person per year. Suppose the standard…

A: [Standard deviation of sample mean =Standard error]Excel command to find P(z&lt;1) is…

Q: When do we use z-distribution? A.) when the standard deviation is unknown. B.) when the population…

A: As per our guidelines we are supposed to answer only one question per post so I am solving first…

Q: Which distribution's height begins low, increases until the middle, and then decreases in a…

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Q: For results based on a small random sample from a bell-shaped distribution, the distribution of the…

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Q: Which statement below is not true regarding standardized distributions?       a. The z-score…

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Q: What is the difference between the t-distribution and the standard normal distribution? A.) the…

A: We ha e given that the statement about to the t-distribution and normal distribution. Here, we need…

Q: The proportion of observation from a standard normal distribution that take values less than 1.5 is…

A: P(Z&lt;1.5)=?   By using standard normal table the probability for 1.5 is  0.9332.   P(Z&lt;1.5)=…

Q: The average income in a certain region in 2013 was $78,000 per person per year. Suppose th standard…

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Q: A sampling distribution (dotplot) for the mean quiz score for a sample n = 30 of STAT101 students is…

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Q: 6.2 Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1, as in…

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Q: 21) Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and…

A: We have given that The graph depicts the standard normal distribution with mean 0 and standard…

Q: normal curve

A: (As per bartleby guidelines, for questions containing multiple subparts, only first three subparts…

Q: The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget…

A: We know that , The Empirical Rule states that 99.7% of data observed following a normal distribution…

Q: In the standard normal distribution, the mean is equal to ______ and the standard deviation is equal…

A: We have find value of standard normal distribution..

Q: The standard deviation of any sampling distribution is called a:  A. Standard error  B. Type- I…

A:

Q: When testing a claim about a population mean with known population standard deviation σ, we use A.…

A: Testing a claim about a population mean Known population standard deviation