When you take samples of size n - 100 from a normally distributed population, what will likely be the shape of the distribution of sample means? Right Skewed Left Skewed Normal

Q: Suppose a group of coworkers make a mean of 40,756 per year with a standard deviant of 8000.  These…

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Q: The difference between two sample means follows a normal distribution if both populations follow a…

A: True We can find it by using the Central limit theorem. By the theorem, difference in sample means…

Q: The time spent (in days) waiting for a heart transplant in two states for patients with type A blood…

A: given data, distribution  of the data approximetly normal distribution μ=128σ=18.3patient in the top…

Q: Scores in the first and fourth (final) rounds for a sample of  golfers who competed in PGA…

A: a.t-value-1.096Degrees of freedom19p-value=0.2868 The p-value estimate is greater than 0.20…

Q: In the standard normal distribution, find the  z  value that corresponds to the  81st  percentile.

A: Given, find z for 81th percentile

Q: Pvalue? An unbalancedCRD is performed with a total of800subjects. Three hundred subjects are placed…

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Q: Probability plot is used to check the normality of sample data and that if it adequately describes…

A: The given statement is 'Probability plot is used to check the normality of sample data and that if…

Q: The director of research and development testing and new drugs she wants to know if there's evidence…

A: Test statistic:Denote μ as the claimed mean; μ = 384. In a random sample of n = 79, the sample mean…

Q: any normal distribution, a z-score of z = -1 separates the highest 68% of the scores from the rest…

A: Given that  A z-score of z = -1 separates the highest 68% of the scores from the rest of the…

Q: True or False? The 5% lower quantile of a t-distribution is LESS than the 5% lower quantile of a…

A: Introduction: Suppose X is a random variable, and x0.05 is the 5% lower quantile, that is, the 5th…

Q: 15. Find the 38th percentile of the standard normal distribution.

A: Let X is a standard normal variable. It means X~ N(0,1)  Mean = 0 and standard deviation = 1

Q: State two of the main reasons for studying the normal distribution.

A: The two main reasons for studying the normal distribution are as follows:The normal distribution is…

Q: When we standardize using​ Z-scores, the shape of the distribution changes.   True…

A: Changing the values in z-scores does not change the shape of distribution. Clearly if values are…

Q: Explain the Normal Distribution? Also Define normal distribution for a single variable?

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Q: What type of data could possibly follow a Normal distribution? O Binary O Qualitative Discrete…

A: According to the given information,  Normal distribution is used.

Q: how to know if something is a normal distribution or not

A: Introduction:Several tests of normality exist, using which you can verify whether a particular data…

Q: Statisticians believe that if a test is valid, it should follow a normal distribution with a mean of…

A: Statisticians believe much time if the test is valid it follows Normal Distribution many times but…

Q: A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements…

A: Given: Mean of differences (D) = 2.05 Standard deviation of differences (sD) = 1.524 Number of pairs…

Q: Let's assume that the height of adult women in the United States follows a normal distribution with…

A: Let X be the height of adult women in the United States. The random variable X follows a normal…

Q: how do you work this out

A: Note: Hey there! Thank you for posting the question. Since your question has more than 3 sub parts,…

Q: For a normal distribution, the mean is equal to the median. True False

A: The Normal distribution is Symmetric distribution. So,  Mean = Median = Mode.

Q: Calculating the Z-score is the last step when evaluating a normal distribution curve. O True O False

A: Normal distribution: 1. It is bell-shaped is a symmetrical continuous probability distribution  2.…

Q: The sample standard deviation follows a normal distribution if the population follows a normal…

A: We know that- The population follows a normal distribution with mean and standard deviation, the…

Q: 7 Draw a vertical line through a normal distribution for each of the following z-score locations.…

A: Given Information: The random variable Z has standard normal distribution. Hence, Thus, the mean of…

Q: A problem says "Find the z-score that cuts off the bottom 85% of a normal distribution."Is this…

A: Let X be a random variable following normal distribution with mean μ and variance σ2, i.e., X~N(μ,…

Q: Tim is a researcher who is dealing with a SAMPLE of scores.  The SAMPLE of scores is: 15, 17, 19,…

A: Given data is 15, 17, 19, 22, 10, 23, 16, 15S.S=122.88

Q: Use the graph of the labeled Normal Distribution to identify u and o. u= 0= Normal Curve -11 -8 -5…

A: Graph is given, We have to calculate Mean and standard deviation for the graph.

Q: If you observe the values of a normally distributed variable for a sample, a normal probability plot…

A: Requirement of normal distribution:If the plot is roughly linear then the variable is approximately…

Q: X is the time of completing a task using a specific tool. X has a normal distribution with a mean of…

A: Given data,Mean μ=25variance σ2=49Standard deviation σ=7z-score=-3.72x=?

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

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Q: Nonparametric test is a design to counter the non-normal distribution type of data. O True

A: Nonparametric test: The nonparametric tests are used if the population distribution is not known.…

Q: If the number of samples taken is 35 what should you assume about the population? O Binomial…

A: Larger sample size means the distribution of results should approach a normal bell-shaped curve. The…

Q: What are the predictor variables in general and what we can observe in general—normal distribution,…

A: Histogram: A simple bar graph of the data where the width bars are the range of the data and the…

Q: What is probability and how is it related to the normal distribution?

A: Probability is a branch of mathematics that deals with the study of random events and their…